That would be B.
A pairs with T(or U in RNA).
C pairs with G.
To build a complete picture of the animals and plants that were living at a particular time in the past. ... In addition, the rock itself provides much useful information about the environment in which it and the fossils were formed.
Explanation:
red and orange colors of the light spectrum play the most important role in plant growth because it increases the production of a hormone that prevents the breakdown of chlorophyll.
They both increase in proportion to one another. Hope this Helps:)