Identify the organ of the digestive system. A)stomach
B)small intestine
C)large intestine
D)liver

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.

What part of the brain is highlighted in the diagram below?

In which layer do organisms on earth love?