What name is given to the process by which a dissolved substance moves across a boundary without energy being required?

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 of the following is a possible reason for sleep? a) growth b)digestive c)speed d)intelligence

How will you manage your time to accomplish the necessary tasks both on the job and at home?