I have a test in a couple days and I still don’t know how to do this stuffsomeone teach mee
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The average diameter of silk fibers produced by spiders is around 1.0 to 4.0 micrometers, while the average diameter of silk fibers produced by silkworms is around 10.0 to 25.0 micrometers.

Spiders produce silk fibers that are generally thinner and more lightweight compared to silkworm silk fibers. Spider silk is known for its exceptional tensile strength, elasticity, and toughness. The diameter of spider silk can vary depending on the spider species and the specific type of silk produced (e.g., dragline silk, capture silk). On the other hand, silkworm silk, also known as bombyx silk, is produced by the domesticated silkworm species Bombyx mori. Silkworm silk fibers are relatively thicker compared to spider silk but still possess high tensile strength. Silkworm silk is primarily used for the production of silk fabric and is renowned for its lustrous appearance and smooth texture.

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Based on the nutrition labels and the nutrient requirement of a marathon runner, the marathon runner will choose sample A because it is rich in carbohydrates.

A marathon runner would typically choose a diet plan that supports their energy needs, enhances performance, and aids in recovery.

This would involve diets rich in carbohydrates, proteins, and sufficient water.

Carbohydrates are the primary fuel source for endurance activities. A marathon runner's diet should include sufficient carbohydrates such as whole grains, fruits, vegetables, and legumes.

Marathon runners need slightly more protein than sedentary individuals to support training adaptations and minimize muscle breakdown

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Answer:

For Darwin himself these five theories were apparently much more a unity than they appear to a person who analyzes them with modern hindsight. The five theories were: (1) evolution as such, (2) common descent, (3) gradualism, (4) multiplication of species, and (5) natural selection.

The organ responsible for storing bile is the gallbladder. So, the correct choice is Gallbladder.

The gallbladder, located beneath the liver, is the organ responsible for storing bile. Bile is a greenish-yellow fluid that aids in the digestion and absorption of fats.

It is produced by the liver and then transported to the gallbladder for storage. When we consume a meal containing fats, the gallbladder contracts and releases stored bile into the small intestine through the bile ducts. Bile helps in emulsifying fats, breaking them down into smaller droplets, which increases the surface area for enzymes to act upon. This process enhances the absorption of fats and fat-soluble vitamins in the small intestine.

The storage and controlled release of bile by the gallbladder ensure that an adequate amount of bile is available for the digestion and absorption of fats whenever required.

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The most specific classification that humans and tigers have in common is that they belong to the same phylum, chordata. Other animals that belong to the chordata phylum include mammals, reptiles, birds, and amphibians.

Additionally, humans and tigers belong to the same class, mammalia, which is characterized by the presence of mammary glands and hair or fur. Mammals are a diverse group that includes a wide range of animals, from small rodents to large elephants.

Finally, humans and tigers belong to the same order, primates, which is characterized by a number of distinct characteristics, including forward-facing eyes, a large brain, and the ability to use tools. Primates are a diverse group that includes monkeys, apes, and humans.

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Correct Question:

Taxonomic rank human-tiger kingdom Animalia animalia phylum Chordata chordata class mammalia mammalia order primates carnivora family holiday Felidae genus homo Panthera species sapiens tigris what is the most specific classification that humans and tigers have in common?

Answer:

The correct answer is - somatic cell division.

Explanation:

Genetic variation is the variation or difference in gene frequency or DNA in the population or among indiviuals. This difference generally caused by the mutation in genes such as deletion or duplication of a gene in the gene pool of an individual or population that can pass to the next generation.

Other than gene mutation, recombination, random mating or sexual reproduction (crossing over in meiosis) leads to genetic variation. The least likely or no genetic variation is caused by the asexual reproduction that takes place in somatic cell division or cells that are not taking part in sexual reproduction.

The color of light(s) that are the best for plants to grow indoors are violet-blue light with a 400 – 520 nanometer range (Option E). They are best for chlorophyll absorption and photosynthesis. The option that supports the answer above is: "The absorption spectrum of plants shows those colors as the most effective" (Option B).

This spectrum is made up of light frequencies communicated with dark bands when electrons absorb energy in the ground state in order to reach higher energy levels. When atoms absorb energy, they form this sort of spectrum.

An absorption spectrum is made up of the frequencies of light transferred with dark bands when electrons in the ground state absorb energy to attain higher energy states.

The absorption spectrum of chlorophylls comprises wavelengths of blue and orange-red light, as evidenced by maxima at 450-475 nm and 650-675 nm, respectively.

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Answer:

Explanation:

Natural selection is where positive traits survive more, allowing those to become more common. Mutation is where radioactivity changes genes in a random way.

Natural selection allows positive mutation to become more common. Adaptation is where natural selection works for a species specifically more a new habitat.

Answer:

A. 55 minutes........................

If an adult hamster with a 24-hour endogenous rhythm receives a lesion to the SCN and a subsequent SCN transplant from a young hamster with an endogenous rhythm of 20 hours, the adult hamster will adopt a 20-hour rhythm will occur.

Exogenous rhythm is the term used to describe environmental variables that affect natural circadian rhythm cycles over the course of a twenty-four-hour period. These variables include light exposure, temperature, ambient noise, regular diet, different time zones, traumatic events, injuries, and occupational stress. Light-sensitive cells in the retina, which are responsible for the body's biorhythms' response to light absorption, set off physiological cues that correspond to sleep/wake cycles. If these cues are out of sync, sleep patterns might be disrupted.

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Metagenomics studies generate huge amounts of sequence data. Examples of genetic insight that can be learned from metagenomics include:

a. Phylogenetic classification of newly identified microbes: Metagenomics can help identify and classify microbes based on their genetic material, providing insights into their evolutionary relationships.
b. Investigation of interference of organisms in symbiosis: Metagenomics can reveal how organisms interact with each other in symbiotic relationships by studying their genetic interactions.
c. Genetic diversity in microbes: Metagenomic studies can uncover the extent of genetic diversity within microbial populations, shedding light on their adaptability and potential for evolution.
d. Identification of gene-expression profiles: By examining the sequence data, researchers can identify genes and their expression patterns, leading to a better understanding of the functional roles of these genes in microbial communities.
e. Information about the diversity of ocean fauna is not a direct result of metagenomic studies, as metagenomics primarily focuses on microbial communities.
f. Complex interactions of microbial communities with the environment: Metagenomics can reveal how they respond to and influence their surrounding environment, helping us understand their roles in various ecological processes.
g. Identification of genes with novel functions: Metagenomic studies can lead to discovering previously unknown genes and their functions, which may have important implications for biotechnology, medicine, and other fields.

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Answer:

Explanation:

my name is aisha

The correct answer is B. Antigen.

An antigen is a molecule that is recognized by the immune system as foreign and stimulates an immune response. Antigens can be found on the surface of pathogens such as bacteria, viruses, and fungi, as well as on cancer cells and transplanted tissues . B cells and T cells are two types of immune cells that recognize antigens and mount an immune response. B cells produce antibodies that specifically bind to antigens, while T cells can directly attack cells displaying the antigens on their surface. Antigens play a crucial role in the immune system's ability to identify and eliminate harmful substances from the body.

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Answer:

1%

Explanation:

Answer:

C or D. Success. Good bye.

Answer: Measuring scale/ruler.

Explanation: As it's a cylinder you would just need to find the diameter and the height. You can then use the formula V = πr²h and TSA =  2πr² + 2πrh.

Put the values in the form "surface area : volume" and you get your desired output.

Those things that help you to do the experiment are called apparatus.

The correct answer to the question is measuring scale/ruler.

The other apparatus we use also and these apparatus are as follows:-

As it's a cylinder you have to measure the diameter and the height after that you can then use the formula as:-

\(V = \pi r^2h\\ TSA = 2\pi r^2 + 2\pi rh.\)

After measuring the vales place those values in the formula to get the area and volume.

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a. The frequency of the "aa" genotype if the percentage of the homozygous recessive genotype (aa) is 36% is 0.36 or 36%.

b. The frequency of the "a" allele is 0.6 or 60%

c. The frequency of the "A" allele is 0.4 or 40%.
d. The frequency of the "AA" genotype is 0.16 or 16% and The frequency of the "Aa" genotype is 0.48 or 48%.

e. The frequencies of the two possible phenotypes if "A" is completely dominant over "a" are "AA" and "Aa".

The frequency of the "a" allele is 0.6 or 60% can be calculated using the Hardy-Weinberg equation:

p + q = 1

where p is the frequency of the dominant allele ("A") and q is the frequency of the recessive allele ("a").

We know that q² (the frequency of the "aa" genotype) is 0.36, so:

q² = 0.36

q = √0.36)

q = 0.6

Therefore, p = 1 - q = 0.4. So the frequency of the "a" allele is 0.6 or 60%.

Since there are only two alleles in the population ("A" and "a"), the frequency of the "A" allele can be calculated as:

p = 0.4

So the frequency of the "A" allele is 0.4 or 40%.

Using the same Hardy-Weinberg equation as before:

p + q = 1

We know that q² (the frequency of the "aa" genotype) is 0.36. We can also use the fact that the sum of the frequencies of all possible genotypes must be equal to 1:

p² + 2pq + q² = 1

Substituting in the values we know:

0.4² + 2(0.4)(0.6) + 0.6² = 1

0.16 + 0.48 + 0.36 = 1

Therefore:

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The 10 metals you would not use would be "Lithium (Li),Sodium (Na), Potassium (K), rubidium (Rb), Cesium (Cs), Francio (Fr)", "Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Mr), Barium (Ba) and Radio (Ra)" due to their low melting temperature.

Refractory metals are a class of metals that are remarkably resistant to heat and wear. The expression is most often used in the context of materials science, metallurgy and engineering. The definition of which elements belong to this group may vary. The most common definition includes five elements: two from the fifth period (niobium and molybdenum) and three from the sixth period (tantalum, tungsten and rhenium). They all share some properties, including a melting point above 2000 °C and high hardness at room temperature. They are chemically inert and have a relatively higher density. Their high melting points make powder metallurgy the method of choice for manufacturing components from these metals. Some of its applications include tools for machining metals at high temperatures, filament yarn, casting molds, and chemical reaction vessels in corrosive environments. In part due to the high melting point, refractory metals are stable against creep deformation at very high temperatures.

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The hallmarks of science are as follows:Testable NaturalAble to be proven false These are the hallmarks of science.The correct answer is option E.

The meaning of "natural" in the hallmarks of science is as follows:Explainable by natural processes Not supernatural Therefore, the correct answer is option E.

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Answer:

The correct answer is A. car with the engine started, but parked and idling

Explanation:

This is the correct answer on edg. 2020

Answer:

The correct answer is A

Explanation:

edge 2021

Answer:

D. The physical appearance

Explanation:

Genotype is the genetic makeup and alleles while phenotype is the physical appearance.

Answer: *CFS*?

1) Biodiversity is the variety of living organisms on Earth, including the diversity of species, genes, and ecosystems.

2) The destruction of ecosystems can lead to a decline in species populations, ultimately resulting in a loss of biodiversity.

3) Habitat loss and poaching of wild animals both generally lead to a decrease in biodiversity. Habitat loss means that ecosystems are destroyed or altered, which can result in the loss of species and genetic diversity. Poaching of wild animals can cause the decline or even extinction of certain species, which can have ripple effects throughout the ecosystem and lead to a reduction in biodiversity. Creating protected ecosystems, on the other hand, can lead to an increase in biodiversity. By preserving and protecting natural habitats, ecosystems can remain intact, and species can continue to thrive. Protected areas can also provide a sanctuary for threatened or endangered species, allowing them to recover and potentially increase in population size. Overall, protected ecosystems can play a crucial role in maintaining and enhancing biodiversity.

4) Degradation is the process of breaking down or deteriorating, typically resulting in a decline in quality, value, or condition.

5) Reducing fishing pressure on threatened and endangered marine species is generally a beneficial action. Overfishing can have significant negative impacts on fish populations and the overall health of marine ecosystems, and can even lead to the extinction of certain species. By reducing fishing pressure on threatened and endangered species, we can help to protect these species from further decline and allow their populations to recover. This can lead to a more sustainable and healthy marine ecosystem with greater biodiversity. Breeding diseases and parasites that can transfer to wild fish is generally a form of degradation. Introducing diseases and parasites to wild fish populations can have significant negative impacts on the health and survival of these species. It can also disrupt the balance of the ecosystem and affect the overall biodiversity of the area. In addition, diseases and parasites can spread beyond the target species, potentially causing harm to other aquatic organisms and even to humans who consume contaminated fish. Therefore, it is important to take measures to prevent the spread of diseases and parasites in aquatic environments and to promote the health of wild fish populations. Creating jobs in coastal communities and using other fish species to feed farmed fish can have both beneficial and degrading aspects, depending on the specific circumstances. On the one hand, creating jobs in coastal communities can be beneficial by providing employment opportunities for local residents and contributing to the economic growth of the area. This can help to reduce poverty and improve the standard of living for people living in these communities. On the other hand, some forms of aquaculture (fish farming) can have negative impacts on the environment, such as pollution from fish waste and the use of antibiotics and other chemicals. In addition, using other fish species to feed farmed fish can contribute to overfishing and the depletion of wild fish populations, which can have negative impacts on marine ecosystems and biodiversity. Therefore, it is important to carefully consider the potential environmental impacts of aquaculture and to implement sustainable practices that minimize negative impacts while maximizing the benefits. This might include using alternative feed sources that are less reliant on wild fish, adopting best practices for waste management and water quality control, and ensuring that farming practices are conducted in an environmentally responsible manner. By doing so, it may be possible to create jobs and support economic growth in coastal communities while also maintaining the health and biodiversity of marine ecosystems.

Being resilient means having the ability to adapt and recover in the face of adversity, stress, or challenging circumstances. Resilience is the ability to bounce back and regain one's footing after experiencing setbacks or difficulties. Resilience is not about avoiding problems or challenges, but rather about facing them head-on and using one's strengths and resources to overcome them. People who are resilient are able to maintain a positive outlook and a sense of purpose, even in the face of difficult situations. They are able to stay focused on their goals and remain flexible in their approach when faced with obstacles. Resilient individuals are also able to draw on their social support networks and seek help when needed, recognizing that asking for help is a sign of strength, not weakness.

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Answer:

A. osmosis

Explanation:

The movement of water from areas of high concentration to areas of low concentration is called osmosis

Answer:

A is correct

Explanation:

Answer:photosynthesis is the most important biochemical process in earth

Explanation: enables us to understand how the world functions as an ecosystem and how photosynthesis acts as a bridge between the non-living and living worlds

it's important because it's to convert solar energy into chemical energy and then store that chemical energy for future use.how it relates to climate change is because the rising levels of co2 in the atmosphere drive an increase in plant photosynthesis

Answer:

Replace the concentration descriptions with actual values.

Explanation:

A graph is used to convey real, accurate and objective information. The use of the description of the concentrations in place of the real values, does not represent an accurate information, but a subjective and imprecise information. For this reason, to improve the quality of this graph and allow the readers to fully understand it, it would be necessary to replace the descriptions of concentration with real values.

Answer:

the contractions would increase

Explanation:

Answer: Explain how this extra bone can disappear over time. This extra band of bone probably disappears over time due to the action of osteoclasts. Osteoclasts are responsible for breaking down bone and releasing the components of the bone (calcium and phosphorus) into the bloodstream.

Explanation:

Glossopteris, a fossil found in africa, australia, india, south america, and antarctica, is significant because it demonstrated that all of the continents where the fossil is found must have been cold when the organism was alive.

This become a amazing continent that covered areas regarded nowadays as Africa, Antarctica, Australia, India and South America. The presence of Glossopteris become used as assisting proof for the progressive idea of “continental drift” at some stage in the mid twentieth century.

Glossopteris fossils offer essential proof for presently widespread distribution of continental plates withinside the Permian length that ended 250 million years ago. Fossils were discovered in areas as remote as Patagonia, India and southern Australia.

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Answer:

Direct combustion is the most common method for converting biomass to useful energy. All biomass can be burned directly for heating buildings and water, for industrial process heat, and for generating electricity in steam turbines. Thermochemical conversion of biomass includes pyrolysis and gasification.

Explanation:

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