How can coevolution present a problem to the species involved if the environment in which they lived changed

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

According to the cell theory, which describes cells? a. all organisms are composed of multiple cells. b. all cells have the same structure and function. c. cells are found in everything on earth. d. living organisms are not created spontaneously

When the cell concentrates potassium within, against the natural tendency of matter, it is performing a.passive diffusion b.facilitated diffusion c.active transport d.pinocytosis