What do scientists believe provides evidence for the Big Bang Theory?
O A. The gradual movement of continents across the ocean floors
B. Stars forming when clouds of gas begin to rotate and burn
C. The solar system being full of comets, asteroids and other debris
D. Red shift of stars far from observers on Earth

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

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