Answer:
A. a year that was cool or dry
Explanation:
Traits are located on "Chromosomes" in the nucleus
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He performed an experiment that explain what occurred on primitive earth billions of years ago. He sent an electrical charge through a flask of chemical solution of methane, ammonia, hydrogen and water. This created organic compounds including amino acids
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Answer:
The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom
Explanation: