The first one is D
A goes with T
C goes with G
And to remember this just think of (A)pple (T)ree
And then (C)ar (G)arage
Answer:
reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population.
lots of waste and dead leaves and things like that
dont plagarise ;)
They are related because they are all in the same blood or family you breathe in oxygen and remove carbon dioxide the carbon dioxide it helps other stuff in the ecosystem to survive or live so its like this people breathe oxygen while plants breathe carbon dioxide.