Answers
Answer:
Hypotheses are proposed explanations for a fairly narrow set of phenomena. These reasoned explanations are not guesses — of the wild or educated variety. When scientists formulate new hypotheses, they are usually based on prior experience, scientific background knowledge, preliminary observations, and logic.
Related Questions
Providing an example from your day-to-day life, explain the functions of the nervous system.
Answers
Commercial hydrogen is obtained from
Answers
Answer:
natural gas, oil, coal, and electrolysis; which account for 48%, 30%, 18% and 4% of the world's hydrogen production respectively
Explanation:
Answer:
There are four main sources for the commercial production of hydrogen: natural gas, oil, coal, and electrolysis; which account for 48%, 30%, 18% and 4% of the world's hydrogen production respectively. Fossil fuels are the dominant source of industrial hydrogen.
Explanation:
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Sea anemones are predatory invertebrates with stinging tentacles that can paralyze many sea animals. The clownfish is immune to the sting of the sea anemone and actually lives among its tentacles. The relationship is mutually beneficial—the clownfish often lures meat-eating animals over to the anemone, and the anemone benefits from the meal. The clownfish often gets to eat leftovers from the anemone’s meal.
When the clown fish is ready to lay eggs, it lays them near a sea anemone. How’s this a reproductive strategy?
Answers
The clownfish's reproductive strategy of laying eggs near a sea anemone is a form of protection and survival for its offspring.
By laying their eggs in close proximity to the sea anemone, the clownfish provide their eggs with a safe place to develop. The sea anemone's tentacles are a powerful defense mechanism that can fend off potential predators that may try to harm or eat the eggs.
In addition to protection, the clownfish also benefit from the relationship with the sea anemone during the reproductive process. The anemone provides a clean surface on which the eggs can be attached and also helps to oxygenate the surrounding water, which is important for the development of the eggs.
The anemone's tentacles also help to keep the eggs free of harmful parasites and fungi. Overall, the clownfish's reproductive strategy of laying eggs near a sea anemone is a mutually beneficial relationship that helps to ensure the survival of the clownfish offspring.
The protection and benefits provided by the sea anemone help to increase the chances of the eggs hatching successfully, resulting in a higher survival rate for the next generation of clownfish.
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92ml 3.0 fl oz what is the ratio
Answers
The ratio between 92 mL and 3.0 fl oz is 46 : 44, or it can be further simplified to 23 : 22.
To find the ratio between 92 mL and 3.0 fl oz, we need to convert the units to a common measurement. Let's convert 3.0 fl oz to milliliters (mL).
1 fluid ounce (fl oz) is equal to approximately 29.5735 milliliters (mL).
Therefore, 3.0 fl oz is equal to 3.0 * 29.5735 = 88.72 mL (rounded to two decimal places).
Now we can express the ratio between 92 mL and 88.72 mL:
92 mL : 88.72 mL
Simplifying the ratio by dividing both sides by the greatest common divisor, we get:
46 : 44
So, the ratio between 92 mL and 3.0 fl oz is 46 : 44, or it can be further simplified to 23 : 22.
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The history of life has been punctuated by several mass extinctions. For example, the impact of a meteorite may have wiped out most of the dinosaurs and many forms of marine life at the end of the Cretaceous period. Fossils indicate that plants were less severely affected by this mass extinction. What adaptations may have enabled plants to withstand this disaster better than animals?
Select all that apply.
- heterospory
- presence of spores
- capacity for photosynthesis
- alternation of generations
- presence of vascular tissues
- presence of seeds
Answers
Answer:
presence of seeds presence of spores
Explanation:
The presence of seeds may have enabled plants to withstand this disaster better than animals, hence option F is correct.
At the end of the Cretaceous period, seed plants were dominating, and when a meteorite strikes our planet, vast dust and clouds cover the atmosphere, and light cannot penetrate these dusts, causing mass killing of animals and plants.
Plants, on the other hand, were less significantly damaged due to the existence of seed; their seed remains latent for a longer amount of time before becoming viable in a favorable environment.
Thus, presence of seeds option F is correct.
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In general, microtubules disassemble and consequently pull the chromatids to the ends of the spindle during ____.
Answers
Answer: The options are not given, here are the options.
.a.prophase
b.prometaphase
c.metaphase
d.anaphase
e.telophase
The correct option is C.
Metaphase.
Explanation:
It is metaphase because during metaphase, the chromosomes lined up together and the two sister chromatids join to a particular spindle fiber. The microtubules them bring the sister together chromatids from the opposite spindle poles. The kinetochore microtubules capture the sister chromatids back and forth til they are able to form alignment along the equator of the cell which is called the equatorial plane.
do you think there should be government regulation against known carcinogenic
Answers
Based on scientific evidence, exposure to carcinogenic substances can have adverse health effects and governments should take necessary actions to regulate the use and disposal of known carcinogenic substances.
Thus, many countries have implemented regulations on carcinogenic substances based on the scientific evidence, such as asbestos, tobacco, etc. to be used in industrial processes which limit the use or sale of certain substances.
Regulation can play a critical role in protecting individuals from the harmful effects of carcinogenic substances. The regulations on carcinogen substances have potential economic impact on industries that use these substances. However, these regulations should be based on the scientific evidence and the potential risks associated with it.
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In whose body is Cowper's gland found? 1
Answers
Answer:
they are found in many male mammals like humans
Explanation:
from which blood vessel will the inferior epigastric artery emerge?
Answers
Answer:
External iliac artery.
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hi please follow me
Answers
Answer:ok
Explanation:
Answer:
Ok
Explanation
Why would we follow you
The speed of sound is:
186,000 miles per hour
1,100 feet per second
86,000 miles per second
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Help me with this..... "Write some importance of freshwater fish ponds in 2 to 3 paragraphs" (include its sources and citations)
Answers
Freshwater fish ponds are an important source of food and income for people around the world. Fish farming in ponds is also an environmentally friendly practice that can contribute to the conservation of wild fish stocks and protect biodiversity.
Why are the freshwater fish ponds so essential?Freshwater fish ponds have been essential for centuries in providing a consistent supply of fish for human consumption. Fish farming in ponds is one of the most efficient and productive ways of producing protein-rich food in the world. This method of fish farming is a sustainable practice that can significantly contribute to meeting the global demand for fish.
One of the significant advantages of freshwater fish ponds is that they can be constructed in areas where other types of agriculture are difficult or impossible to carry out. Ponds are also suitable for small-scale fish farming, which makes it an accessible and affordable method for people in rural areas to produce their own fish.
Freshwater fish ponds also have environmental benefits. They help to reduce the pressure on wild fish populations by providing an alternative source of fish for human consumption. This, in turn, helps to conserve wild fish stocks and protect biodiversity.
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Describe how impluses are transmitted across the synapse
Answers
Answer:
1) An electrical impulse travels along an axon of the presynaptic neuron.
2) When the impulse reaches the nerve-ending, it releases chemical messengers called neurotransmitters.
3) These chemicals diffuse across the synapse and bind with specific receptor molecules on the membrane of the next neuron.
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cell is not the same shape and size. A, True B, False
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h.o.p.e t.h.i.s h.el.p.s
the following are the size of shoes 7,3,8,4,6,7
find the
1 mean
2 mode
Answers
Answer:
Mean is 28.3
Mode is 7
Explanation:
Not sure about mean
What are the four main spheres of earth?
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(I hope this helps)
A dihybrid cross is performed between a corn plant with the genotype YYSS and a corn plant with the genotype yyss. What percentage of offspring will be yyss
Answers
Answer:
0%
Explanation:
All corn plants will have the genotype YySs
The percentage of offspring that will be yyss is 0%.
In a dihybrid cross, the alleles for two different traits are considered. In this case, the traits are color (purple or yellow) and texture (smooth or wrinkled). The genotype of one parent is YYSS (homozygous dominant for both traits), and the genotype of the other parent is yyss (homozygous recessive for both traits).
According to the principles of Mendelian inheritance, when crossing two parents with different genotypes, the offspring will inherit one allele from each parent for each trait. In this case, the offspring will receive either a Y or y allele for color and an S or s allele for texture.
Since the parent with the genotype YYSS is homozygous dominant for both traits, all of its gametes will carry the Y and S alleles. On the other hand, the parent with the genotype yyss is homozygous recessive for both traits, so all of its gametes will carry the y and s alleles.
When these gametes combine during fertilization, all the resulting offspring will receive a Y allele for color and an S allele for texture, as there are no alternative alleles present in the parents. Therefore, none of the offspring will have the yyss genotype.
In summary, the dihybrid cross between the plants with genotypes YYSS and yyss will produce offspring with the genotype YySs, but none of the offspring will have the yyss genotype. Therefore, the percentage of offspring that will be yyss is 0%.
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The complete question is:
A type of corn has kernels that are either purple or yellow, and smooth or wrinkled. Yellow-Y- is dominant over purple-y- and smooth-S-is dominant over wrinkled --- A dihybrid cross is performed between a corn plant with the genotype YYSS and a corn plant with the genotype yyss. What percentage of offspring will be yyss? Select one or more:
a. 100% b. 80%c. 50% d. 25% e. 10%f. 0%What is meant by heartattack
Answers
The most common cause of a heart attack is a buildup of plaque, which is a fatty substance, inside the arteries. When the plaque ruptures, it can form a blood clot, leading to a blockage in the artery and preventing blood flow to a part of the heart. The lack of blood flow can cause damage to the heart muscle, which can be life-threatening if not promptly treated.
The symptoms of a heart attack can vary but commonly include chest pain or discomfort, shortness of breath, pain or discomfort in the arms, back, neck, jaw, or stomach, nausea, lightheadedness, and cold sweats.
1. Describe how genetic material is distributed via reproductive processes.
a. In terms of alleles, how is the result of sexual reproduction different from the result of asexual reproduction? (1 point)
b. Why do most organisms that reproduce sexually contain an even number of chromosomes? Hint: Think about the chromosomes contained in diploid cells. (1 point)
c. A cucumber plant has 14 chromosomes in each of its somatic cells. Describe how meiosis leads to a reduced number of chromosomes in a cucumber plant's gametes. How many chromosomes does a cucumber gamete contain? (2 points)
2. Describe sources of genetic variation in offspring.
a. How does independent assortment produce genetic variation in offspring? Hint: Think about how chromosomes line up. (2 points)
b. How does the number of chromosomes in an organism affect the number of possible combinations resulting from independent assortment? (1 point)
c. Describe what occurs during crossing over and how it produces genetic variation. Draw a model to support your answer. Your model should include two chromosomes — one with the alleles A, E, and G, and the other with the alleles a, e, and g. (4 points)
Answers
a. In sexual reproduction, offspring inherit genetic material from both parents, resulting in a combination of alleles from each parent. This introduces greater genetic diversity compared to asexual reproduction, where offspring are genetically identical to the parent because they are produced through mitotic division.
b. Most organisms that reproduce sexually contain an even number of chromosomes because sexual reproduction involves the fusion of gametes, which are haploid cells containing half the number of chromosomes. When two gametes with an equal number of chromosomes fuse, the resulting zygote becomes diploid and contains pairs of homologous chromosomes. Having an even number of chromosomes allows for proper pairing and separation of homologous chromosomes during meiosis.
c. Meiosis is the process that leads to a reduced number of chromosomes in gametes. In cucumber plants, meiosis starts with a diploid cell that has 14 chromosomes. Through two rounds of cell division, the chromosome number is halved. The resulting cucumber gamete will contain seven chromosomes, which is half the number present in the somatic cells.
a. Independent assortment occurs during meiosis when homologous pairs of chromosomes line up randomly at the metaphase plate. This random alignment leads to different combinations of maternal and paternal chromosomes in the resulting gametes, contributing to genetic variation in offspring.
b. The number of chromosomes in an organism affects the number of possible combinations resulting from an independent assortment. The formula \(2^n\) is used to calculate the number of possible combinations, where n represents the number of homologous pairs of chromosomes. With each additional pair of chromosomes, the number of possible combinations doubles.
c. Crossing over occurs during prophase 1 of meiosis when homologous chromosomes exchange genetic material. This process involves the breaking and rejoining of DNA segments between non-sister chromatids of homologous chromosomes. It results in the exchange of alleles between the chromosomes, creating new combinations of alleles on each chromatid. This genetic recombination during crossing-over contributes to genetic variation in offspring. A model illustrating crossing over would show the exchange of segments between the two chromosomes, resulting in a mixing of alleles.
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•Is the invasive species ‘kudzu’ toxic? •Is it considered a predator? Answer in a short 3 sentences In your own words ^
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Kudzu as an invasive species is considered as a destructive and deadly weed. It has the abililty to envelope a very wide range of habitat rendering other species the inability to grow or be wipe out. It is also considered as a predator because of its characteristic to kill other species. Its difficulty to be eradicated makes it a very noxious species.
an organism that uses oxygen to break down food to obtain energy
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How does exhaling remove waste from the body? Explain the systems that make this happen, using complete sentences.
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Exhaling removes waste from the body by expelling carbon dioxide through the respiratory system.
Exhaling plays a crucial role in removing waste from the body, particularly in the form of carbon dioxide (CO2), a byproduct of cellular respiration. The respiratory system, composed of the lungs and airways, is primarily responsible for this process.During inhalation, air containing oxygen is drawn into the lungs through the nose or mouth. Oxygen then diffuses across the lung tissue into the bloodstream, where it binds to hemoglobin and is transported to cells throughout the body. In the cells, oxygen is utilized in metabolic processes, generating energy and producing CO2 as a waste product.When we exhale, the diaphragm and intercostal muscles relax, causing the volume of the chest cavity to decrease. This action increases the pressure within the lungs, and air rich in CO2 is expelled from the body through the airways. The CO2 is removed from the bloodstream and eliminated from the body, reducing the waste buildup.Overall, the respiratory system's main function is to facilitate the exchange of gases, allowing oxygen to enter the body and carbon dioxide to be eliminated. Exhalation plays a vital role in removing waste by expelling CO2 and maintaining a balanced gas composition within the body.For more questions on respiratory
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Please help will give 50points
Which of the following plays an important role in digestion, but is not part of the digestive system?
A gall bladder
B bladder
C Oliver
D stomach
Answers
Answer:
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Explanation:
B bladder is not part of the digestive system. The bladder is part of the urinary system and plays a role in storing and eliminating urine.
What is the difference between chyle and chylomicrons?
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Answer:
QUESTION:What is the difference between chyle and chylomicrons?
ANSWER:Chyle: A fluid consisting of a mixture of lymphatic fluid (lymph) and chylomicrons that has a milky appearance. Chylomicrons are small fat globules composed of protein and lipid (fat) which are combined in the lining of the intestine.
#CARY_ON_LEARNING#HOPE_IT_HELPSThe diagram below gives information about carbon dioxide and oxygen in the atmosphere. Where is the name of the process represented in this diagram that produces the oxygen
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The spring in the diagram is replaced with another spring that has a spring constant of 30 N/m. What is the stretch of this new spring when a 5-N block is attached?
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The stretch of the new spring when a 5-N block is attached is approximately 0.167 meters or 16.7 centimetres.
To determine the stretch of the new spring when a 5-N block is attached, we need to consider Hooke's Law, which states that the stretch of a spring is directly proportional to the applied force.Hooke's Law is expressed as F = kx, where F is the applied force, k is the spring constant, and x is the stretch or displacement of the spring.Given that the new spring has a spring constant of 30 N/m and a 5-N block is attached, we can rearrange Hooke's Law to solve for x:x = F/kx = 5 N / 30 N/mx ≈ 0.167 m or 16.7 cmTherefore, the stretch of the new spring when a 5-N block is attached is approximately 0.167 meters or 16.7 centimetres.For more questions on Hooke's Law
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YOU HAVE 5 MINUTES!!!!
Design an easy do-it-yourself compost bin that can be put (exnfe ffpao)
together at home. You can describe it, draw and label it, or both!
Include the following in your design:
• drawing or description of design
• materials used for the bin
• size of the bin
• substances used to fill it
• household items that can go in it
• how long it takes before it is ready
• how you use the compost
2)
Compost bin design: Add these household items to
your compost bin:
Compost is ready to use in this
much time:
Use your compost this way:
Answers
A description of the compost bin that can be used for this experiment is that the bin is a rectangle-shaped container that is made of wood. This container is 150 cm wide and 30 cm deep. It can hold up decaying materials for up to one month.
How to use the compostThe compost can be used to store decaying materials that will be used in a nearby farm for manure. Composting is the act of storing up decomposable materials that remain in a container until they are ready for use.
The compost so obtained can be used to improve the fertility of the soil where crops will be planted.
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What is the definition of a dwarf planet?
a.A dwarf planet is a large asteroid.
b.A dwarf planet is a planet that is further than 2 AU from its orbiting star.
c.A dwarf planet is a solar system body that has a spherical shape and an orbit around the Sun that is not cleared of other objects.
d.A dwarf planet is a small planet that is smaller than Mars.
Answers
Answer:
A Dwarf Planet is a small planet that is made out of dust, ice and gas. But, still came from the Nebula.
Nebula: Technically, A planet generator. LOL
Explanation:
Answer:
c
Explanation:
what are lipids and how are they used
Answers
Answer:
A lipid is any of various organic compounds that are insoluble in water. They include fats, waxes, oils, hormones, and certain components of membranes and function as energy-storage molecules and chemical messengers.
Explanation:
looked it up.
Answer: A lipid is any of various organic compounds that are insoluble in water. They include fats, waxes, oils, hormones, and certain components of membranes and function as energy-storage molecules and chemical messengers. The body uses lipids as an energy store, as insulation and to make cell membranes.
Explanation:
I hope this will help you.
Webbed feet is a recessive trait in iguanas. The chart shows the prevalence of alleles for webbed feet over three generations. Analyze the data for evidence of evolution. Choose all the statements supported by the data.
Answers
Answer:
A,C,D
Natural selection is occurring, Webbed feet became more common over time, There is a selective advantage for iguanas with webbed feet
Explanation: Did it on USA Test prep
The statements which is supported by the data include the
following:
Natural selection is occurring.Webbed feet became more common over time.There is a selective advantage for iguanas with webbed feet.What is Selective advantage?These are the traits which gives an organism better chances of
survival and reproduction when compared to others.
In the case of Iguanas, their webbed feet developed over time
as a result of natural selection occurring. This created a
selective advantage as it can swim and dwell in water.
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