An irritation of the stomach lining results in: a) ulcer b) gallstones c) hemorrhoids d) appensicittis

In the african savanna, more wildebeests are born than the environment can support. which is most likely to happen over a period of years as a result

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.

During the winter, this species of fox has white fur, but in the summer, it has brown fur. what environmental change may have lead to this fox's fur color? snow cover increase in sun's brightness volcanic eruption global warming