True or False: Humans have radial symmetry

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 does all of the organ system in a human form

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell