What are the two ways a substance can move through a cell’s membrane?

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.

Give examples of selective advantage of organism’s body part/organ

If a grape were placed in a hypertonic solution what would happen and why?