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3 years ago

Which statement best summarizes the law of conservation of energy

2 answers:

3 0

The law of conservation of energy basically states that energy a\cannot be created or destroyed, therefore if it disappears in one form it must reappear in another (answer C.)

Nataly [62]3 years ago

3 0

Answer: Option (C) is the correct answer.

Explanation:

According to law of conservation of mass, energy can neither be created nor it can be destroyed as it can only be transformed from one form to another.

For example, when ice melts at room temperature then it absorbs heat from its surroundings and converts into liquid state of water.

So, the heat energy absorbed by ice is used in breaking of bonds between ice particles that results in liquid form. Hence, energy from solid state disappears and it reappears in liquid form.

Thus, we can conclude that the statement, if energy disappears in one form, it must reappear in another, best summarizes the law of conservation of energy.

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Which of the following is true about the ability of water to produce electricity?

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Many of the responses to stress are attributed to activation of the sympathetic nervous system and are mediated by

belka [17]

Answer:

Responses to stress are attributed to activation of the sympathetic nervous system and are mediated by adrenal medulla which is the central portion of the adrenal gland.

Explanation:

Stress is a physical, mental, and emotional response to a threat, and causes bodily and mental tension. There are different causes of stress, for example, an exam, a divorce, moving from a house, being fired, somebody’s death.

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3 years ago

Why does crossing over occur more often between two distantly linked genes than between two closely linked genes on the same chr

Bingel [31]

Answer:

This is because crossing over occurs between two homologous chromosomes. It involves an exchange of segments of their arms of the two chromosomes during Metaphase I of meiosis. Genes on the different chromosomes are, therefore, more likely to be crossed over than genes on the same chromosome. In addition, because sections of the arms are exchanged, genes that are close to each other on the same chromosome are more likely to be exchanged together (these are called linked genes) than genes that are far apart on the same chromosome.

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3 years ago