What do chromosomes have to do with mitosis

Indica el nombre y la fucion de los vasos sanguineos que entran y salen de los riñones

How do chloroplasts set plants apart from other living things

Ecologist have observed a sharp increase of sulfur dioxide in the air . what might be a possible consequence of excessive sulfur dioxide in the air ? a. acid rain b. ozone layer depletion c. ozone layer hole d. increase in sea levels