Answer: (A) the time that two species have been evolving independently.
Explanation: The molecular clock is figurative term for a technique that uses the mutation rate of biomolecules to deduce the time in prehistory when<u> two or more life forms.</u>
Answer:
d
Explanation:
In particular, organelles called chloroplasts allow plants to capture the energy of the Sun in energy-rich molecules; cell walls allow plants to have rigid structures as varied as wood trunks and supple leaves; and vacuoles allow plant cells to change size.
Active transport (exocytosis, endocytosis, pumps, etc.)
Here is your answer
Rocks break down as they interact with air and weather - Weathering
Density differences and other factors cause metals to concentrate in igneous rocks - volcanic activity
Seawater heats up from contact with hot rock, metals dissolves in it, the water rises and contacts cooler water, causing metals ores to settle on the ocean floor - hydro thermal energy
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