Why does ice become less dense than water?

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Answer 1
Ice actually has a very different structure than liquid water, in that the molecules align themselves in a regular lattice rather than more randomly as in the liquid form. It happens that the lattice arrangement allows water molecules to be more spread out than in a liquid, and, thus, ice is less dense than water.

Related Questions

in which stage does formation of mature viruses occur?

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The formation of mature viruses typically occurs during the stage known as the "assembly" or "maturation" stage. This stage is a crucial step in the viral replication cycle.

After viral proteins and genetic material are synthesized and assembled within the host cell, the newly formed viruses undergo maturation processes to become infectious and functional.

During maturation, viral components are organized and packaged to form complete viral particles. This includes the assembly of viral capsids or envelopes around the genetic material, as well as the incorporation of viral enzymes or proteins necessary for viral replication and infection.

Once the viruses have reached maturity, they are released from the host cell to initiate the next cycle of infection and spread to other cells or hosts.

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Population growth models can be used to describe changes occurring in a population and _____.Group of answer choicesdecide what will occurdetermine actual occurrenceshelp predict future changesestablish what happened in the past

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Population growth models can be used to describe changes occurring in a population and help predict future changes. This model is used to predict the population of an organism at a given time. Because of this model, future changes in the population can be predicted giving into consideration certain factors such as reproduction rates of the organism.

Population growth models cannot decide what will occur in the future. Future changes depend on the factors affecting the population size. It does not determine actual occurrences or establish what happened in the past. Past and present growth of the population cannot be determined by this model. It can only be used to predict future changes of the population.

Answer - Option 3 - help predict future changes

What is the name of the process by which an electric impulse moves through a nerve cell?

Answers

Explanation:

Action Potential.

An action potential, also called a nerve impulse, is an electrical charge that travels along the membrane of a neuron. It can be generated when a neuron's membrane potential is changed by chemical signals from a nearby cell.

humans with only one sex chromosome (xo) usually have underdeveloped sexual characteristics and are sterile.

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The statement is accurate that humans with only one sex chromosome (XO) usually have underdeveloped sexual characteristics and are sterile.

Sex chromosomes are the chromosomes that determine an organism's sex. The X chromosome and Y chromosome are the sex chromosomes in humans.

A human female has two X chromosomes, while a human male has one X and one Y chromosome.Humans with only one sex chromosome, an X chromosome, are referred to as XO individuals.

XO individuals are frequently sterile because they lack the essential genetic information for proper sexual development. These individuals' underdeveloped sexual characteristics are also apparent.

As a result, humans with only one sex chromosome (XO) usually have underdeveloped sexual characteristics and are sterile.The presence of only one sex chromosome is not exclusive to humans.

Some other animals, such as birds, moths, and reptiles, have a similar genetic makeup. However, the results differ depending on the species.

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convection currents in the (blank) are partially responsible for the movement of tectonic plates. A. stratosphere b. geosphere c. lithosphere d. asthenosphere​

Answers

Answer:

asthenosphere

Explanation:

bc its liquid, and bc it flows, creating movement fot the plate underneath us to move

blank is the study of how organisms interact with their environment?
FILL IN THE BLANK PLEAS HELP ME!!!!!!!!!!!!!!!!!!!!!

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Answer: Ecology is the study of how organisms interact with their environment.

Nicotine replacement and self-management techniques are two approaches to smoking__________________.
What is the name of the method in which a smoker tries to avoid tempting situations and manages feelings that lead to nicotine use?

True or False Most people pick up smoking habits in adulthood.

Making sure your friends know you are tobacco-free and sticking to that decision in the face of pressures and influences requires ________________skills.

Critical Thinking Identify 5 health benefits of smoking cessation (stop smoking) that occur throughout the years after you quit, as well as those you see within a few days.

Can someone pls help me.

Answers

Answer:

It requires trolling your friends skills

6.


Which statement best describes the DNA molecules made from this process?

The new DNA molecules are identical to each other and to the original molecule.
The new DNA molecules are identical to each other but not to the original molecule.
The new DNA molecules are each identical to only one strand in the original molecule.
The new DNA molecules are not identical to the original, providing variation in the DNA.

Answers

Answer:

The new DNA molecules are identical to each other and to the original molecule.

Explanation:

The new DNA molecules are identical to each other and to the original molecule. Thus option 1 is correct.

What are DNA molecules?

DNA stands for deoxyribonucleic acid.

DNA is defined as the molecule that conveys genetic information for an organism's development and function.

DNA is made up of two connected strands that spiral around each other to form a twisted ladder-like structure known as a double helix.

DNA is made up of molecules called as nucleotide.

Nucleotide are made up of three types of molecules.

The phosphate groupThe sugar moleculeThe nitrogen base

Thus, the new DNA molecules are identical to each other and to the original molecule. Thus option 1 is correct.

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you where these terms were introduced.
1. Describe the difference(s) between the
following terms.
(a) concentrated and dilute (4.1)
(b) acid and base (4.2)

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Answer:

A. concentrated is the substance on its own, dilute is the substance mixed with (diluted) water.

B. an acid increases the concentration of H+ ions. A base is a substance that releases hydroxide (OH-) ions (in aqueous solution, donates electrons and accepts protons)

Explanation:

you where these terms were introduced.1. Describe the difference(s) between thefollowing terms.(a) concentrated

Which group was not described in Woese's tree of life analysis?
View Available Hint(s)
a. Prokarya
b. Archaea
c. Bacteria
d. Eukarya

Answers

Woese's analysis of a tree of life did not include prokarya among the categories it described.

What does analysis mean example?

the process of closely scrutinizing something in order to learn more about it or form an opinion and judgment after doing so: An unbiased assessment of the results of the investment plan was done by our financial specialists. Clare's interpretation of the issue piqued my interest.

What is a analysis in writing?

Your chance to contextualize or explain the evidence for your reader is during analysis. You may explain to a readers the importance of the evidence, what it means, and how it connects to other concepts in your work in your analysis.

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Explain how cancerous cell growth differs from normal cell growth.

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Answer:

Cancer cells divide at a very fast and uncontrollable rate unlike normal cells.

For instance, cancer cells: grow in the absence of signals telling them to grow. Normal cells only grow when they receive such signals. ignore signals that normally tell cells to stop dividing or to die (a process known as programmed cell death, or apoptosis).

WILL GIVE BRAINLIEST!!!!!!!!
what do Biomolecules contain?

carbon to carbon bonds

carbon to hydrogen bonds

carbon to sulfur bonds

carbon to silicon bonds

Answers

Answer:

carbon to hydrogen bonds

Explanation:

The respiratory system of the body can be injured by volcanic _____ that comes from a volcanic eruption.ashbouldersrock

Answers

Taking in volcanic exhaust clouds aggravates the lungs and mucous layers. It can influence how well your lungs work. Volcanic exhaust clouds may likewise influence your insusceptible framework.

One long-haul impact of volcanic debris is silicosis. Silicosis is a sickness bringing about lung debilitation and scarring, from openness to particles of free translucent silica. Minerals that are related to silicosis incorporate quartz, cristobalite, and tridymite, all possibly present in volcanic debris.

The most widely recognized consequences for well-being brought about by volcanic ejections incorporate horrendous wounds, consumption, suffocation, skin aggravation, eye wounds and conjunctivitis, respiratory issues, and even passing.

Debris particles might contain translucent silica, a material that causes a respiratory infection called silicosis.

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In living systems, the predominant organic molecules are ________, which are largely responsible for the structure, behavior, and unique qualities of a cell

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The majority of organic molecules in living systems are proteins, which play a key role in a cell's structure, function, and distinctive characteristics.

Protein is used by the body in a variety of ways. It fosters tissue growth and repair, encourages metabolic reactions, and synchronizes biological processes. Your body's structural foundation is provided by proteins, which also guarantee ideal pH and fluid equilibrium.

They also transport and store nutrients, help maintain a robust immune system, and, if required, can act as a source of energy. Because of all of these tasks, protein is one of the nutrients that is most important for your health.

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Which type of cloud resembles a puffy cotton ball?

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Answer:

Cumulus clouds look like fluff cotton balls

Explanation:

The type of cloud that resembles a puffy cotton ball is called a cumulus cloud. Cumulus clouds are characterized by their distinct fluffy appearance with a well-defined shape.

Cumulus clouds often have a rounded, dome-like top and a flat base. Cumulus clouds typically form due to convective processes when warm air rises and cools, causing water vapor to condense into visible cloud formations.

These clouds are commonly associated with fair weather conditions, although they can also develop into towering cumulus clouds or cumulonimbus clouds, which can bring thunderstorms and heavy precipitation.

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3.1 If farmers plant hedges around their fields, explain what effect this might have on species diversity around their land?

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Planting hedges around farmland can have a significant positive impact on species diversity around the land. Hedges are living barriers that provide a variety of habitats for birds, insects, and small mammals. They provide shelter, nesting sites, and food for many species.

Hedges also provide a natural corridor that allows species to move safely from one area to another.By planting hedges, farmers can create a more diverse landscape that supports a range of species. The hedges can act as a buffer between the farmland and surrounding habitats, reducing the impact of farming on the environment. They can also help to reduce soil erosion, retain moisture, and provide shade for crops.The presence of hedges around the land can also encourage the growth of wildflowers, which in turn attracts pollinators like bees and butterflies. These pollinators are essential for crop production, so hedges can have a direct impact on the productivity of farmland.Overall, planting hedges around farmland is a simple and effective way for farmers to enhance species diversity around their land. By providing habitats and corridors for wildlife, hedges can help to maintain healthy ecosystems and support sustainable agriculture.

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What is shin spints?

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acute pain in the shin and lower leg caused by prolonged running, typically on hard surfaces

Which form of energy is an input for photosynthesis?

Answers

Answer:

Light Energy

Explanation:

The process through which green plants and certain other organisms convert light energy into chemical energy is known as photosynthesis. Light energy is collected and utilised by green plants during photosynthesis to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic molecules.

The energy for photosynthesis is light energy

7. A condition in humans that is characterized by an enlargement and degeneration of the alveoli,
resulting in decreased lung capacity, is known as
A. goiter
B. bronchitis
C. arthritis
D. emphysema

Answers

C.Arthritis
Definition- Arthritis is a disease of the Inflammation of one or more joints, causing pain and stiffness that can worsen with age.

why do planets take different times to comple an orbit?​

Answers

If a planet is close to the Sun, the distance it orbits around the Sun is fairly short. This distance is called an orbital path. The closer a planet travels to the Sun, the more the Sun's gravity can pull on the planet. The stronger the pull of the Sun's gravity, the faster the planet orbits.

You have a plant that you want to show off at a party. The party happens during autumn (aka fall). Usually in autumn (aka fall) the leaves of your plant fall off. You want to delay the leaves falling off your plant until after the party. What plant hormone would you use to help keep the leaves on? ethylene O cytokinins O gibberellins auxin

Answers

Answer:

Auxins

Explanation:

Auxin is a plant hormone that has to do with both leaf and fruit fall.

Why are phospholipids important

Answers

Answer:

Phospholipids serve as a major structural component of most biological membranes, e.g. cell membrane. The phospholipids are vital to the function of the cell membrane. Being amphipathic, their presence creates an effective barrier preventing the entry of all

They are a major structural component

If two plant species with different numbers of chromosomes interbreed: Group of answer choices the hybrid offspring will be unable to reproduce sexually at first the offspring will be capable of breeding with one of the parental species but not the other the hybrid offspring will immediately be a new species none of the above

Answers

If two plant species with different numbers of chromosomes interbreed, the outcome for the hybrid offspring will depend on the compatibility of their chromosomes.


One possible outcome is that the hybrid offspring will be unable to reproduce sexually at first. This can occur if the chromosomes from the different parental species are not able to pair up and separate properly during meiosis, which is the process of cell division that leads to the production of gametes (reproductive cells). Without proper chromosome pairing and separation, the hybrid offspring may not be able to produce viable gametes, making sexual reproduction difficult or impossible.
Another possibility is that the hybrid offspring will be capable of breeding with one of the parental species but not the other. This can happen if the chromosomes from one parental species are more compatible with the hybrid offspring than the chromosomes from the other parental species. In this case, the hybrid offspring may be able to produce viable gametes with one parental species but not with the other, leading to limited reproductive compatibility.
It is also possible that the hybrid offspring will immediately be a new species. This can occur if the combination of chromosomes from the two parental species results in a hybrid with a distinct set of characteristics and traits. If the hybrid offspring can successfully reproduce and establish a stable population, it may eventually be considered a new species.
Therefore, the correct answer is "none of the above," as the outcome will depend on the specific genetic interactions between the two plant species. The result could be any of the mentioned possibilities or something else entirely.

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what is photo synthesis​

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Answer:

Explanation:

Photosynthesis is the process of producing Glucose from CO2 and Water. The chemical reaction requires sunlight.

6H2O + 6CO2 ===> C6H12O6 + 6O2

If you are interested in the Environment, you should notice that plants take in CO2 and give away O2, the exact opposite of what animals and humans do. We should be extra careful about how we treat forests -- they produce what we need.

Scientists studied the teeth on the fossils of an ancient fish. The oldest fossils indicate the fish mostly ate plankton. The teeth on more recent fossils indicate the fish began to eat larger plants. Which hypothesis does this observation best support?.

Answers

The oldest fossils indicate the fish ate plankton whereas the teeth on recent fossils indicate the fish began to eat larger plants. This observation best supports evolution of life theory

Evolution explains how living things are changing and how modern living things descended from ancient life forms that no longer exist now . As living things evolve, they become better suited for the environment. This is because they adapt.

The fossil found in the lower layer is older than the one above it. The fossils found in the same area are of exact same age.

The age of fossils is calculated by finding the age of the rock in which the fossil is found. One of the most accurate method is radiometric dating.

In this process, scientists measure the amount of parent isotope and daughter isotope in a sample. They determine the material's age, from this ratio.

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Which of the following is not an effect of environmental pollution on the population of wildlife?
a. changes in respiratory and central nervous systems
b. changes in growth rates
C. changes in distribution
d. changes in death and birth rates
e changes in abundance

Answers

The answer is a for sure

what factors affect spectral signal of vegetation at the canopy scale?

Answers

Numerous factors have an impact on the spectral signal of plants at the canopy scale. These include the vegetation's ability to reflect light, how much of it is absorbed by the vegetation, how much water is in the vegetation, and how much chlorophyll is in the vegetation.

The kind of vegetation present, the leaf area index, the presence of other elements like dust or dirt, and the presence of other plants in the vicinity all have an impact on the reflectance of the vegetation.

The amount of light available, the sun's angle, and the kind of vegetation present all have an impact on how much sunlight is absorbed by the vegetation. The vegetation's amount of water content is impacted by the amount of nitrogen in soil.

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When a phosphate is transferred from ATP, it can phosphorylate another molecule. How could this assist in allowing a protein to transport molecules against their concentration gradient?

Answers

Energy cell harvesting is impotant. Cells need energy so they can move from one place to another and ATP helps that. ATP is consiered "energy currency" of the cell and it's useful for storing egery and helping molecules/cells move around.

Protein to move against concentration gradient requires energy. Protons go trhough a protein channel called ATP synthase which helps them move out of the mitrochonrial matrix.

The phosphorylation of another molecule can assist a protein to transport molecules against their concentration gradient by energizing them.

PHOSPHORYLATION:

Phosphorylation is the process by which a phosphate group is added to another molecule.

Adenosine triphosphate (ATP) loses a phosphate group to another molecule in the process of phosphorylation to energize the molecule. This is the process by which energy is released for use.

Moving molecules against a concentration gradient requires energy input in form of ATP, hence, phosphorylation can assist a protein to transport molecules against their concentration gradient by energizing them.

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cuales son las principales funciones que cumplen las proteinas en nuestro cuerpo

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The proteins are involved in every function inside the body. These include catalysis, transport, signaling, hormones, protection against pathogens, structural components and so forth.

Proteins are the biomolecules present inside the body. These are made by the monomers called amino acids which are the organic substances. The proteins are synthesized in the ribosome present in the cell's cytoplasm through the process called translation. The information of the synthesis of protein comes from the DNA.

Catalysis is the process of increasing the rate of chemical reaction inside the body. This process is accomplished by the help of enzymes which are the biological catalysts made from proteins. The enzymes do so by lowering down the activation energy of the chemical reactions.

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The given question in English language is:

What are the main functions that proteins fulfill in our body?

in this procedure, we will use a bell-jar model of the lungs, shown in figure 23.3, to view the effects of pressure and volume on ventilation. the bell-jar model has two balloons, each representing one lung, and a flexible membrane on the bottom, which represents the diaphragm muscle. when you have completed the activity, answer check your understanding questions 1 and 2 (p. 625). 1 apply upward pressure to the membrane. this represents how the diaphragm muscle looks when it is relaxed. what has happened to the pressure of the system (has it increased or decreased)? what happened to the volume of the lungs? explain.

Answers

When upward pressure is applied to the membrane, this represents how the diaphragm muscle looks when it is relaxed. The following changes occur:

The pressure of the system decreased and The volume of the lungs increased

In this procedure, we will use a bell-jar model of the lungs, shown in figure 23.3, to view the effects of pressure and volume on ventilation. The bell-jar model has two balloons, each representing one lung, and a flexible membrane on the bottom, which represents the diaphragm muscle.

When the upward pressure was applied to the membrane, it was a representation of a relaxed diaphragm muscle. This, in turn, reduced the pressure of the system. When the pressure of the system is reduced, the volume of the lungs will increase as a result of the atmospheric pressure in the outside world, filling the available space within the lungs to maintain equilibrium. Hence, when pressure is reduced, volume is increased.

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please answer please!!!! Will mark brainliest for complete answer. -the first photo is to calculate the area. Just question number 7 a and b i). And question number 8. Use inverse operations to complete the second equation each time The diagonal of the screen of a laptop computer is 19 inches. The width of the screen is 17 inches. What is the helght of the computer screen in inches? A person looks horizontally at the edge of a 5.0-m-long swimming pool filled to the surface (index of refraction for water is 1.33). The maximum depth to which the observer can see is O 1.1 m. O O 2.2 m. O 4.4 m. O 6.6 m.O none of the above. EXERCISESComplete tDpassive forms of the verbs in brackets.the sentences with the correct active of1 Language (1)obviously(exist) for many thousands of years before writingwritten records really (3).(invent), but the existence of(mark) thebeginning of history as we know it. The earliest writing(find) in part of what (5).(call) Iraq.(4)now2 The printing press (1)oftenOf course, books (2)Johannes Gutenberg (3)(call) one of the most important inventions of all time.. (produce) before(present) his firstlong, thousands of books (4)creation to the world, but always by hand! Before too(5).(print) and(distribute) all over Europe.3 If you're worried about your phone (1).(steal), here's a helpful hack. A special app can(install) so that you can (3).(2).able to see if the phone (4).(track) the phone if it's lost or stolen. You'll also beeven (5).(use). It can(wipe) clean remotely, to stop(get) hold of data.alreadyCommboleoth1criminals from (6).4 The first self-driving car only (1).(hit) thewe know them will soon (2).road very recently, but it's quite possible that cars as(replace)by this new model. Over recent years, much of theresearch into these cars (3).Musk, a TED speaker who (4).(fund) by Elon(start) lots of(5).different companies. Thousands of self-driving carsthey (6).(build)-and(get) more sophisticated.Complete each sentence by making these verbs2 5/3 divided by 7 (answer as a fraction) Who proposed the theory that mental processes originated in the brain? According to "Take a Closer Look", what type of lens does a camera contain? science define character study Defining and adhering to an organizational mission, evaluating ownership and management alternatives, and outlining the goods/service category to be sold are parts of which element of retail strategy? The magnetic field vector B 1 at point 1 has the magnitude of 1.3 nT and points out of the figure. What are the magnetic field vectors B 2 through B 5 at points 2 through 5 due to the moving charge in (Figure 1)? The enduring belief that one ought to be courteous, polite, and obedient is an example of a(n) ____. Group of answer choices Low avoidance cultural belief Terminal value High power distance cultural belief Instrumental value PLEASE HELP!!How did the Spanish government respond shortly after Pincknes Treaty was signed? O They created a competing port in the city of New Orleans, O They offered to purchase the Louisiana Territory from France, O They attempted to close the Mississippi River to American traders. O They offered to sell Spanish Florida to the United States How do I write inequality notation from this graph? (ILEN)What is this its scamble letter in mapeh calculate power disspated by the element of an electric fire (heater) of resistance 30 ohms when a current of 10 amps flows in it. if is on for 30 hours in a week determine the energy used. determine the weekly cost of energy if eletricity costs K 13 per unit A math teacher keeps her wall-sized graph paper in a box shaped like a triangular prism. The triangular face of the prism has a base of 21 cm and a height of 16 cm. The length of the entire box is 130 cm.Which of the following is the volume of the box?. 43,680 cm3 B. 21,840 cm3 C. 4,368 cm3 D. 19,340 cm3 f(x)=-1-3x+ 20Find f(5) 2. What is TRUE about Dr. Freud's concept of "id"?It is also known as the "I" or the self.It is completely conscious.It is completely unconscious.It is both conscious and unconscious. NO websites or inappropriate answers and please show me the steps for all the answers