by what age does a child's performance on an intelligence test stabilize?

Answer:

They look very much like the cells you can see at the surface of a pot of boiling water. We call them convection cells because they are due to convection, the physical mechanisms responsible for the boiling water.

Explanation:

mark as brainiest

Answer:

Physics. the transfer of heat by the circulation or movement of the heated parts of a liquid or gas.

Meteorology. the vertical transport of atmospheric properties, especially upward (distinguished from advection).

the act of conveying or transmitting.

The differenece between the control group and the experimental one, is that the first one does not receive the treatment, while the second one does. In this example, the Control group are the 40 people that received the placebo.

An experiment must have at least a control and an experimental group.

The control group is used to identify if, under the same environmental conditions, there are factors other than the treatment itself affecting the results of the study.

The experimental group is the one that receives the experimental procedure (in this case, the new drug) with changes in the independent variable.

The control group must be selected from the same population as the experimental group.

Data from an experimental group are compared with the data from a control group.

These two groups are identical in all aspects except for the independent variable that the researcher changes in the experimental group to observe how they affect the individuals.

In the exposed example,

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Answer:

The reason is because apes have many human traits. First they look like humans. Second they are very intelligent like humans. Gorillas are smarter than monkeys. Third, monkeys have had tails for millions of years. Apes have evolved to not have tails.

Explanation:

Can I have brainleist, thanks , 5 star and tell me if I am right?

Answer: Honestly I think thats bogus but I guess it is a educated sci fi theory.

Explanation:

The diastolic pressure is used to express the resting pressure inside the cardiovascular system between heart contractions. The correct Option is A.

It is one of the two values obtained when measuring blood pressure, the other being the systolic pressure. The diastolic pressure represents the minimum pressure within the arteries when the heart is at rest between beats. It is an important indicator of cardiovascular health and can be affected by factors such as age, exercise, and certain medical conditions. High diastolic pressure is associated with increased risk of heart disease and other health problems, and may require medical intervention to manage.

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The natural selection that favors survival of extreme phenotypes of a population is called Disruptive Selection (A).

Disruptive selection occurs when the environment favors individuals with extreme phenotypes, resulting in two distinct populations with different traits.

In this process, the intermediate phenotypes are less likely to survive and reproduce. Disruptive selection can eventually lead to the formation of new species. To summarize the process, here are the steps:

1. An environmental change or selective pressure occurs.
2. This pressure favors individuals with extreme phenotypes.
3. Intermediate phenotypes become less successful in survival and reproduction.
4. Over time, the population splits into two distinct groups with different traits.
5. This can eventually lead to the formation of new species due to the separation of traits.(A)

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Reducing Sugars : 1. Benedict's test2. Fehling's test3. Barfoed's test.. A brick-red precipitate indicates the presence of reducing sugar.The absence of a brick-red precipitate implies that there is no reducing sugar.The reddish-brown precipitate suggests the existence of monosaccharides.The existence of disaccharides is revealed by the green precipitate.

When conducting tests for reducing sugars, lipids, proteins, and starch, different methods, observations, and conclusions are employed. The methods used to carry out these tests differ depending on the substances being tested.The table below shows the methods, observations, and conclusions when carrying out tests for reducing sugars, lipids, proteins, and starch. Method Observation Conclusion

Lipids : 1. Emulsion test2. Solubility test .The formation of a milky white layer indicates the presence of lipids.The absence of a milky white layer implies the absence of lipids.The sample forms two separate layers during the test.The fat in the sample is the upper layer.

Proteins : 1. Biuret test2. Xanthoproteic test3. Millon's test The sample turns purple when Biuret's reagent is added to it.A yellow colour develops when Xanthoproteic acid is added to the sample.A brick-red precipitate shows that Millon's reagent was present.The existence of peptides or proteins is revealed by a purple or violet colour.

Starch : 1. Iodine testThe blue-black colour in the sample indicates the existence of starch.Absence of a blue-black colour shows the absence of starch.

Therefore, the above table indicates that the methods used, observations made, and conclusions drawn when carrying out tests for reducing sugars, lipids, proteins, and starch differ depending on the substances being tested.

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The best explanation for the phenomenon of cacti growing in American deserts and most spurges growing in African deserts is the concept of convergent evolution.

Convergent evolution refers to the independent development of similar traits or adaptations in unrelated organisms facing similar environmental challenges. In this case, cacti and spurges have both evolved to thrive in hot, dry environments, but they belong to different plant families and are not closely related.

The environmental conditions found in deserts, such as high temperatures, limited water availability, and intense sunlight, impose similar selective pressures on plants. As a result, different plant lineages have independently evolved similar adaptations to survive and thrive in these harsh desert conditions.

Cacti, belonging to the family Cactaceae, are well-known for their ability to store water in their succulent stems and leaves. They have specialized structures called "areoles" from which spines, which provide protection against herbivores and help reduce water loss through transpiration, emerge.

Spurges, on the other hand, belong to the family Euphorbiaceae and have also evolved adaptations to survive in arid environments. They often have succulent stems and leaves, similar to cacti, that store water. Additionally, many spurges have reduced or absent leaves, which helps minimize water loss through transpiration.

The occurrence of cacti predominantly in American deserts and most spurges in African deserts can be attributed to historical and geographical factors. Over time, different lineages of plants in different regions have independently evolved similar adaptations to survive in their respective arid environments.

Therefore, the best explanation for cacti growing in American deserts and most spurges growing in African deserts is convergent evolution, where unrelated plant lineages have independently developed similar adaptations to cope with the hot and dry conditions of their respective desert habitats.

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If you leave a plant in the dark for a long period of time, it will eventually die. This is because plants need light for photosynthesis, the process by which they convert light energy into chemical energy in the form of glucose, which is the plant's food. Without light, plants cannot produce food and they will exhaust their stored reserves of nutrients and energy.

DNA is important in identifying genetic relationships within a group, but it alone is not sufficient to determine complex social constructs like race, whiteness, or property; the inclusion of social, cultural, and historical factors is crucial in understanding these concepts.

Biological anthropologists and genome scientists should consider the relationship between Europeans and Indigenous people in their research to provide a more comprehensive understanding of human genetic diversity and population history.

DNA analysis can provide valuable insights into genetic relationships within a group, such as determining genetic ancestry or identifying related individuals. However, race, whiteness, and property are social constructs that go beyond genetic factors and are shaped by historical, cultural, and socioeconomic factors. These concepts are complex and cannot be solely explained by genetic data. Therefore, it is important for researchers, including biological anthropologists and genome scientists, to recognize the limitations of genetic data and consider the broader social context when studying race, whiteness, and property.

In the context of researching Europeans and Indigenous people, it is crucial for researchers to acknowledge and incorporate the historical and ongoing relationships between these groups. This includes understanding colonization, displacement, and the impact of power dynamics on genetic diversity and health outcomes. By including this relationship in their research, scientists can contribute to a more accurate and nuanced understanding of human genetics and promote social and scientific equity.

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The transfer of polypeptides into the endoplasmic reticulum (ER) is called cotranslational import.

Cotranslational import refers to the process of transferring polypeptides into the endoplasmic reticulum (ER) as they are being synthesized by ribosomes. It occurs simultaneously with the translation process, where the ribosomes are actively synthesizing the polypeptide chain.

Cotranslational import is a vital process for many proteins that are destined to be secreted, localized to the ER, or targeted to other membrane-bound organelles. It ensures that these proteins are properly folded and modified within the ER before being transported to their final cellular destinations.

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Answer:

B and D

Explanation:

The primary structural element of the cell membrane is composed of cholesterol and phospholipids.

Lipids are any organic molecules that are soluble in fat or oil but not in water. They include lipids, waxes, oils, hormones, and some cell membrane components and act as chemical messengers and energy storage molecules.

Lipids perform three major biological functions in the body: they are necessary signaling molecules, fundamental components of cell membranes, and facilities for energy storage. The three main types of lipids are sterols, phospholipids, and triacylglycerols (often referred to as triglycerides). Lipids are frequently referred to as fats or oils. In contrast to fats, which are compounds that are solid at room temperature, oils are substances that are liquid at this temperature.

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Cells increasing their activity to produce more heat when it is cold.

Negative feedback is a strategy of the body to maintain homeostasis, that is, to maintain the dynamic balance of the body. It can be defined as a situation where the body causes a negative change, contrary to the factor that is causing the body to become unbalanced.

When a system's outputs are subsequently fed back into it, the influence of successive iterations is minimized or reduced. This situation is known as negative feedback.

Negative feedback loops in markets can thereby lessen volatility, for instance through contrarian or value investment.

Therefore, Cells increasing their activity to produce more heat when it is cold.

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Answer:

2.775415722

Explanation:

density is Mass divided by volume

CAM plants use Crassulacean Acid Metabolism, which prevents photorespiration through timing.

In CAM plants, carbon dioxide is absorbed at night and stored as organic acids. During the day, these acids are decomposed, liberating carbon dioxide for use in photosynthesis. This enables CAM plants to maintain their stomata closed throughout the day, lowering the possibility of photorespiration and reducing water loss through transpiration.

CAM plants can thrive in arid regions with little water and high temperatures. These plants are able to maximize their water use efficiency through CAM photosynthesis and thrive in environments where other plants would struggle.

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Answer:

Passive transport

Explanation:

Passive transport is transport of substances without the requirement of energy. In contrast, active transport is the movement of substances that requires energy.

In the picture, the molecules are moving from a high concentration to a low concentration. This is transport down a concentration gradient, rather than against a concentration gradient.

Transporting molecules down the concentration gradient does not require energy, and is therefore passive transport.

The types of inheritance include:

1) SINGLE INHERITANCE : A child/derived class is derived from only one parent/base class.

EXAMPLE : Dog Class inherits the Animal class.

2) MULTIPLE INHERITANCE : A child/derived class is derived from more than one parent/base class.

EXAMPLE : A class Bat is derived from base classes Mammal and WingedAnimal.

3) HIERARCHICAL INHERITANCE : More than one child classes are derived from single class.

EXAMPLE : Physics, Chemistry and MAths are derived from Science Class.

4) MULTILEVEL INHERITANCE : A derived/child class is derived from a parent class which is derived from a single parent class.

EXAMPLE : Babydog inherits the Dog class which again inherits the animal class.

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Answer:

need more information to answer this question

Common ingredients found in energy drinks are sugar (in the form of glucose, fructose, sucrose, or other sugar-based syrups), caffeine, taurine (amino acid), B-vitamins, guarana (caffeine-containing plant extract), and ginseng (herb).

The nature of each ingredient listed on a can of energy drink can vary depending on the specific product, but some common ingredients and their nature are:

1. Sugar: This is a simple carbohydrate that provides a quick source of energy for the body.

2. Caffeine: This is a stimulant that can help increase alertness and energy levels.

3. Taurine: This is an amino acid that is often included in energy drinks for its potential to improve athletic performance.

4. Vitamin B12: This is a vitamin that is important for energy production in the body.

5. Guarana: This is a plant extract that contains caffeine and is often included in energy drinks for its stimulant effects.

6. Ginseng: This is an herb that is often included in energy drinks for its potential to boost energy levels and improve mental clarity.

It is important to read the ingredient list on a can of energy drink to understand the nature of each ingredient and how it may affect your body.

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The given statement "once a cell decides to enter the cell cycle, the time from start to finish is the same in all eukaryotic cells" is False.

The length of time for the cell cycle can vary among different eukaryotic cells and can even vary for the same cell type under different conditions.

For example, some cells in the human body, such as skin cells, can undergo rapid cell division and complete the cell cycle in as little as 24 hours, while other cells, such as liver cells, can take much longer to complete the cell cycle.

Additionally, the length of time for each phase of the cell cycle can vary depending on the cell type and its current stage of development or function.

Therefore, the statement that the time from start to finish is the same in all eukaryotic cells is false.

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The brain is a sophisticated and intricate organ that manages all facets of our actions, thoughts, and physiological processes. It can be split up into a number of areas, each with unique specific duties.

Vital processes like breathing and heart rate are regulated by the brainstem. By relaying sensory data to the proper areas of the cerebral cortex, the thalamus controls voluntary movement and balance.

The limbic system affects memory, motivation, and emotions. The four lobes of the cerebral cortex—frontal, parietal, occipital, and temporal—each with distinct roles—are responsible for consciousness, sensation, thinking, and voluntary movement.

The corpus callosum connects the brain's two hemispheres and aids in communication.

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All living things are made up of one or more cells - the cell theory supports her findings.

All living things are constructed from cells. The second component of the cell hypothesis was the process by which new cells are created from pre-existing ones. Every cell is comparable, which is the final element. The most fundamental building blocks of life are cells.

The body's cells come in a wide variety of shapes, sizes, and types. A "generalized cell" is a term introduced for descriptive purposes. All cell type characteristics are present. The cell membrane, the nucleus, and the cytoplasm sandwiched in between make up a cell.

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Answer:

C

Explanation:

If blood glucose is low, insulin is not released into the bloodstream and glucose is not stored as glycogen.

Insulin is only released by the pancreas when the glucose level in the bloodstream rises beyond the setpoint. When released, insulin converts excess glucose to glucagon and the latter is stored in body muscles and the liver. When required, that is, when the glucose level in the bloodstream falls beyond the setpoint, the glycogen is converted back to glucose by glucagon enzyme released by the pancreas.

The correct option is C.

Answer:

screening

Explanation:

Answer:

c

Explanation:

Answer: c

Explanation:

not because I got it myself but because the other dude is right

*The ear is responsible for the sense of hearing by sensing sound waves. This organ also senses body position that keeps our balance.

*The semicircular canals inside the ear have fluid that moves whenever there is a change in head position. There are tiny hairs that line the semicircular canals and they sense the movement of the fluid. When there is a movement of the fluid, these tiny hair send nerve impulses to the vestibular nerve and these impulses are transmitted to the brain. Now, the brain interprets these impulses and sends messages to the peripheral nervous system, which maintains the balance of the body and triggers the contraction of the skeletal muscles.

A closed circulatory system is favorable for an earthworm due to its segmented body and burrowing lifestyle. An open circulatory system is favorable for a crayfish due to its large size and aquatic lifestyle.

A closed circulatory system, where blood is contained within vessels, is advantageous for an earthworm due to its segmented body and burrowing lifestyle. Earthworms have numerous body segments, each with its own set of muscles, nerves, and organs. A closed circulatory system allows efficient distribution of oxygen and nutrients to these body segments. The blood, pumped by a muscular vessel called the dorsal blood vessel, flows through a network of smaller vessels, supplying oxygen and nutrients directly to the tissues. Waste products, such as carbon dioxide, are also efficiently removed. This ensures that each body segment receives a sufficient supply of oxygen and nutrients, enabling the earthworm to carry out vital functions and survive.

Conversely, a crayfish possesses an open circulatory system, where blood is not entirely enclosed within vessels. Instead, a fluid called hemolymph bathes the tissues directly. This system is favorable for crayfish due to their larger size, fewer body segments, and aquatic lifestyle. The open circulatory system allows for efficient circulation and movement of hemolymph throughout the crayfish's body. The hemolymph flows through the heart and is pumped into arteries, which then deliver it to various body tissues. Oxygen and nutrients are exchanged directly between the hemolymph and cells. Waste products are similarly removed by the hemolymph. The open circulatory system, combined with the crayfish's aquatic environment, facilitates the exchange of gases and nutrients, ensuring the crayfish's survival.

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Answer: after organelles it cells,tissues,organs,organ system then it give you the last one which is organism.

Explanation:

Tonicity refers to an extracellular method's ability to cause water to migrate into or out of a cell via osmosis.

Tonicity differs from osmolarity in that it considers both comparative solute intensities and the permeability of the cellular membranes to these same solutes.

When a cell is immersed in a hypertonic condition, water escapes and the cell shrinks. There is no net water flow in an isotonic atmosphere, hence the cell size does not vary.

When a cell is immersed in a hypotonic atmosphere, water enters the cell, starting to cause it to swell.

Isotonic conditions are excellent for red blood cells, and the organism contains homeostatic (stabilisation) processes to ensure these conditions remain consistent.

Tonicity is an issue for all living creatures, especially those with flexible cell walls and that live in hyper or hypotonic settings.

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