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2 years ago

When a substance changes from a liquid to a solid, which of the following are true? *

2 answers:

6 0

Second and fourth are true because the shape is changed since liquid does not have a shape and the particles are more strong bonded on solids

Natalka [10]2 years ago

4 0

The Answer To This Question Is: D) the particles in the substance connect more strongly to one another.

The reason for this answer is because:

It cant be the first answer because a particle cannot change in mass. That would be impossible (search it, if you want to make sure).

It cant be the second one either because particles cannot change shape due to them being circles.

It cant be the third one too because a single particle again, cannot change shape, mass, or softness.

However, particles can be close and tight together (making it a solid), loose and free (making it a liquid), or far apart (making it a gas).

This makes the last option a reasonable option.

Thank you for your time, and have a nice day ahead m8!

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Why does darkness affect the light-independent reactions of photosynthesis?

Marrrta [24]

Answer:

Plants stop their daytime activities and rest during the night much like animals do. ... Light independent reactions require the energy gathered in the thylakoids. Mitochondria produce sugars more effectively in the darkness than chloroplasts do.

Explanation:

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3 years ago

Could someone please help me with question 21

Masja [62]

Answer:

Explanation:

the egg of a rabbit contains 22 chromosomes, a somatic cell of a rabbit would contain twice as many chromosomes, for a total of 44

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3 years ago

During their early stages of development, the embryos of reptiles, birds, and mammals look very similar. The embryos of reptiles

DedPeter [7]

Answer:

share a common ancestor

Explanation:

The similarity in their embryos and embryonic development suggests that reptiles, birds, and mammals share the same ancestor.

Similarity in the structure and development of embryo is one of the evidences that is been used by scientists to support the theory of evolution of species. According to the theory of organic evolution, all organisms are on earth as a result of descent with modifications from common ancestors.

Reptiles, birds, and mammals are all vertebrates. They share some basic characteristics and are thought to have shared a common ancestor before each group took different adaptive channels leading to their differences as they currently exist.

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3 years ago

Proteins are used to enable movement, provide structure and support and carry out important chemical reactions inside the body.

guajiro [1.7K]

Answer:a diet rich in amino acids

Explanation:

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3 years ago

Which of the following shows an unsaturated fatty acid?

astra-53 [7]

Answer: Option (c) is the correct answer.

Explanation:

A long hydrocarbon chain that consists a terminal carboxylic group is known as a fatty acid.

An unsaturated fatty acid consists a double bond within the fatty acid chain. If a fatty acid contains more than one double bond then it is known as polyunsaturated fatty acid.

For example, oelic acid has chemical formula $C_{18}H_{34}O_{2}$ is an unsaturated fatty acid.

Therefore, we can conclude that option (c) represents an unsaturated fatty acid.

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3 years ago