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Answer:

3.1 The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers such as plants, algae, and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water. This establishes the beginning of energy flow through almost all food webs.

Explanation:

have a nice day.

The energy is related to the change of state represented by the model by: D. Atoms lose energy as a gas changes to a liquid.

A model of the transition from a gas to a liquid is shown in the accompanying image. It demonstrates how atoms or molecules change from being widely scattered as in a gas to being concentrated as in a liquid.

The atoms in this process move from a higher-energy state  to a lower-energy state releasing or losing energy in the process. The most common kind of energy loss is heat.

Therefore the correct option is d.

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Answer:

Element

Explanation:

An element is made up of a single type of atom, that is, it’s a substance made up of atoms that have the same number of protons in the nucleus, this number is known as the atomic number of the element. An atom is the smallest particle of an element that retains its properties.Each element is made up of atoms with the same chemical properties such as reactivity, ionization potential. Chemical elements are identified by names given in antiquity, derived from some property of them, from the name of their discoverer, from the place of discovery. In nature there are 92 elements that can be presented (at 1 atm of pressure and 25 ºC) as solid: iron, lead; liquid: bromine, mercury or gas: chlorine, oxygen.

Answer:

chlorplasts

Explanation:

The main sources of methane gas emission are:

Breeding animals: their digestive process produces this gas, and because the production of these animals is very large across the world, it's a considerable amount of this gas to take into count.

Fossil fuel: the methane is emitted during the extraction of petroleum, gas, or carbon.

Landfill: the organic matter is decomposed in anaerobic conditions (without oxygen) and a product of this reaction is methane gas.

Answer:

Electrical event (nerves sending electricity pulses) Mechanical event (Heart starts to pump faster) Pressure change (Blood pressurization) Fluid movement and distribution.

The reason for the clear zone may be that there is Insufficient lipolytic activity.

The absence of clear zones when using LB media with 1% olive oil for screening lipolytic bacteria could be due to Insufficient lipolytic activity.

Enzymes called lipases, which are produced by lipolytic bacteria, break down fats and oils. It's possible that the bacteria utilized in the experiment won't create lipases or have poor lipolytic activity, which would prevent them from efficiently hydrolyzing the olive oil in the media. There wouldn't be any observable clearing or lipid hydrolysis zones as a result.

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Answer:

A True

Explanation:

Answer:

a. True

Explanation:

The dew point is the temperature at which air is saturated with water vapor and condensation occurs. When the temperature of the air reaches the dew point, moisture condenses into droplets, forming dew, fog, or cloud. The dew point is an important measure of atmospheric moisture and can have a significant impact on weather and climate. A high dew point indicates a high amount of moisture in the air, while a low dew point indicates low atmospheric moisture. The dew point is calculated based on the temperature and relative humidity of the air, and can be used to forecast the likelihood of precipitation or other weather-related events.

The structure that develops in the mesoderm and allows for more complex internal organ formation is coelom.

what is coelom?

The coelom develops within the mesoderm during embryogenesis. In most animals, the coelom (or celom) is the major bodily cavity that surrounds and contains the digestive tract and other organs.

What are the functions of coelom?

The structure that develops in the mesoderm and allows for more complex internal organ formation is coelom.

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Answer:

Virgo because I'm a Virgo and I hate myself.

Answer:

The worst Zodiac sign, in my opinion is Libra. I am Cancerian. Have a nice day.

Explanation:

For Libras, it is all about justice. Not anything else.

Answer: Energy Flow Through an Ecosystem

Secondary and tertiary consumers, omnivores and carnivores, follow in the subsequent sections of the pyramid. At each step up the food chain, only 10 percent of the energy is passed on to the next level, while approximately 90 percent of the energy is lost as heat.

Answer:

That corn is a more natural food for crows to eat.

Explanation:

This expirement only showed that crows eat more corn, not why.

A scientific theory are:

A scientific hypothesis are:

Both are scientific theory and scientific hypothesis are:

Scientists are known to be people who often test hypotheses and also  theories. They are said to give scientific explanations for what we see in the natural world.

A hypothesis is known to be seen as a form of an idea or a given proposition that is said to be be tested by a lot of observations or experiments.

A theory is known to be a kind of well thought-out explanation in regards to  what is seen of the natural world.

Hence, A scientific theory are well-established, highly reliable explanation. A scientific hypothesis are based on observations of natural phenomena and Both are scientific theory and scientific hypothesis can be tested by many independent researchers

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In the snow habitat, the white rabbit would camouflage the best due to its fur color blending with the snowy background. In the summer habitat, the brown rabbit would camouflage better as its fur color matches the earthy tones of the environment.

1. Snow Habitat:

In the snow habitat, the rabbit that would camouflage the best is the white rabbit. The reason for this is that its fur color matches the snowy background, providing effective camouflage. Predators in the area would have a harder time spotting the white rabbit against the white snow, increasing its chances of survival.

2. Summer Habitat:

In the summer habitat, the rabbit that would camouflage the best is the brown rabbit. The brown fur color of the rabbit blends well with the earthy tones of the environment during this season. This camouflage helps the rabbit hide from predators by making it less noticeable among the vegetation and natural surroundings.

Camouflage plays a crucial role in an animal's survival by allowing it to blend in with its surroundings and avoid detection by predators. In snowy habitats, animals with white or light-colored fur have an advantage as their colors match the snowy landscape. Conversely, in environments with lush vegetation and earthy tones, animals with brown or green coloration are better able to conceal themselves.

It is important to note that camouflage effectiveness may vary depending on factors such as lighting conditions, specific shades of fur color, and the presence of other visual cues in the environment. However, in general, white rabbits would be more successful at camouflage in snow habitats, while brown rabbits would have better camouflage in summer habitats.

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Answer:

cytokinesis

Explanation:

IN plants,a cell plate is formed ,where as in animal a cleavage is formed

Answer:

amino acids

Explanation:

(if you are confused, I recommend watching the videos from Khan Academy and The Amoeba Sisters.)

The sodium-potassium ion pump found in some cell membranes is made of amino acids.

It is a protein that is found in many cells. It keeps the intercellular concentration of potassium ions [K+] greater than the surrounding medium while keeping the internal concentration of sodium ions lower than the surrounding.

Its main function is to maintain the membrane potential of the cell. It also maintains osmotic equilibrium. 

It is a protein and is composed of amino acids.

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Based on this information, scientist could predict that the base \(\boxed{ adenine }\) pairs with \(\boxed{ thymine }\) and the base \(\boxed{ cytosine }\) pairs with \(\boxed{ guanine }\) in the formation of the DNA molecule.

\(\circ \: \: { \underline{ \boxed{ \sf{ \color{green}{Happy\:learning.}}}}}∘\)

Answer:

a. True

Explanation:

Bruce Wallace was a professor emeritus of genetics who performed many population studies. He worked in 1958 at the University of Cornell as a professor of genetics. In 1963, he performed a population study wherein the recessive allele It was at a frequency of 0.5. The population was propagated for 10 generations and the frequency of It for each generation was determined.

The result of this study showed that lt/lt died without reproducing, whereas, individuals with genotype +/+ were normal.

You can calculate BMI using this formula:

a) To conclude you need to compare the BMI of this year old boy with the normal BMI for this age (you should have a table with normal BMI or you can search it on the internet) . If it is higher it can be overweight or obese, if it is lower compared to the normal BMI it is underweight. From what I saw when BMI is above 24.9 it is considered overweight.

b) In this exercise you have to solve the equation, you consider that weight is an X and take into account units

Answer:

Masks are a simple barrier to help prevent your respiratory droplets from reaching others. Studies show that masks reduce the spray of droplets when worn over the nose and mouth.

Explanation:

The correct matches are as follows:

1. These organisms are likely to inhabit a compost pile that is actively composting. - Thermophile

2. The bacteria that grow in and on the human body are in this group. - Mesophile

3. These organisms might grow in the superheated water near hydrothermal vents in the ocean floor. - Hyperthermophile

4. These organisms might be isolated from water pools on the surface of a glacier. - Psychrophile

Based on the given information, the bacterial isolate would be categorized as an obligate anaerobe.

Psychrophiles are creatures that grow in cold habitats such as glaciers and polar areas at low temperatures, often between -20°C and 10°C. These creatures might have been isolated from water puddles on the surface of a glacier.

Mesophile bacteria are those that grow in and on the human body. Mesophiles are creatures that grow at moderate temperatures, often between 20°C and 45°C, and are commonly found in habitats with temperatures comparable to those of the human body.

Hyperthermophiles are creatures that thrive in extremely hot conditions such as hydrothermal vents and hot springs. These creatures might flourish in superheated water near hydrothermal vents on the ocean floor.

Thermophile: These organisms are most likely to live in an active compost pile. Thermophiles are organisms that thrive in hot conditions, often between 45°C and 80°C, and are commonly found in compost piles, hot springs, and geothermal locations.

The bacterial isolate would be categorized as an obligate anaerobe because growth was observed on the plate incubated in the anaerobe jar but not on the plate incubated on the shelf in the incubator, indicating that the organism requires an oxygen-free environment to grow.

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Answer:

The correct answer for the given question is (D) radioactive DNA is found inside the infected cell and radioactive protein was found in the medium outside the cell. This demonstrates that DNA carries virus genetic information.

Explanation:

Harshey and chase conducted an experiment on bacteriophage in 1951 the bacteriophages that are used are responsible for infecting bacteria. they found that genes are not made up of protein but DNA.

This is an experiment that used the method known as isotope labeling. They tag DNA with Phosphorus and protein with sulfur as the coat of bacteriophages are also made up of protein. They found out the DNA of bacteriophages is inserted into bacteria while the protein coat remains outside in the medium. It means that only DNA is what transfer not the protein.

Answer: A.

Explanation: They are all made of metal

The wing of a bald eagle is homologous to the wing of a penguin. Homologous structures are structures that are of similar evolutionary origin.

Homologous structures are  described as anatomical features found in different species that have a common evolutionary origin. These structures may have different functions in different organisms, but they share a similar underlying structure and can be traced back to a common ancestor.

The wing of a bald eagle and the wing of a penguin are considered homologous structures because they both evolved from a common ancestral structure, even though they serve different purposes  which is flight in the case of the bald eagle and swimming in the case of the penguin.

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Answer:

B a diverging boundary where two ocean plates move apart from one another

Explanation:

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Answer:

The inheritance of fur color in cats is indeed sex-linked. The tortoise-shell color is a combination of black and orange fur. The allele for black fur is represented by X³ and the allele for orange fur is represented by Xº. When a female cat with a tortoise-shell color mates with an orange male cat, the genetic cross can be represented as follows:

Xº Y

X³ X³Xº X³Y

Xº XºXº XºY

The proportion of the F₁ phenotypes would be 1:1 for females (50% tortoise-shell and 50% orange) and 1:1 for males (50% black and 50% orange).

Male kittens can never have the tortoise-shell color because they only inherit one X chromosome from their mother. Since the alleles for black and orange fur are both located on the X chromosome, male kittens can only inherit one or the other, but not both.

Female kittens can have the tortoise-shell color because they inherit one X chromosome from each parent. If they inherit the X³ allele from one parent and the Xº allele from the other parent, they will have both black and orange fur, resulting in a tortoise-shell color.

Explanation: