A food chain is a way of showing how moves through a community

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.

Pulmonary arteries carry highly oxygenated blood. true or false?

Light sensitivity in euglena is provided by the