Answer:
<h3><em>Both DNA, which stores genetic information and encodes protein sequences, and RNA, which is involved in the direct production of proteins, are nucleic acids.</em></h3>
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Explanation:
Solar energy is the original source of energy in most ecosystems. There must be a continual supply, due to energy only flowing in one direction in an ecosystem. Energy that is lost to heat must be replaced by more energy.
Properties of a pure substance are constant because the structure of the pure substance is not varying.
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Answer:
Mitosis
Explanation:
Mitosis produces new cells, and replaces cells that are old, lost or damaged for a person's body cells.
