models and simulations are useful because they allow us to study phenomena that are otherwise too small, too far away, or too complicated to observe. few models can replicate the actual phenomenon perfectly, however. Identify and explain one limitation of "Beyond the Black Hole"

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.

Which law represents a balanced chemical equation?

What is the compliment dna strand to the following sequence: ttgactaggcta