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Answer:
Option 2 (Population of organisms change over time.
Answer:
Trojans Asteroids
Explanation:
Trojan Asteroids orbit a larger planet where the gravitational pull of the sun and the planets are balanced, im not sure if the answer is correct though. good luck!
Answer:
Main ingredient of protein
Explanation:
Nitrogen is used by our body to make amino acids which in turn make proteins.
Answer:
DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.
Explanation: