Darwin also suggested a mechanism for evolution: natural selection, in which heritable traits that help organisms survive and reproduce become more common in a population over time. A heritable trait is one that's passed on from parents to children by way of genes.
Answer:
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Explanation:
B
digestive system absorbs water and nutrients and circulatory systems carries nutrients to cells and excretory system helps eliminate waste
Answer:
no
the speed is affected by the mass of the planets and venus moves in the opposite direction to the other plants
