Complete the sentences to describe how nitrogen bases pair up in DNA. Adenine always pairs with
Cytosine always pairs with
.

According to the theory of punctuated equilibrium, at what rate does speciation occur? species change depending on the rate of natural selection. after periods of stasis, new species evolve relatively rapidly. species change slowly and eventually form new species. some species change quickly and others change slowly to balance the overall rate.

One gene can influence trait(s). one trait can be determined by gene(s).

Recommend a strategy for incorporating sustainable human activity into a tropical rain forest biome.