A large flood in a river may cause abrupt shifts leading to the carving of a new channel. The point at which this change occurs is a(n) .

Aprocess in green plants that involves the use of carbon dioxide and water in the production of glucose and oxygen using the suns energy

Which statement best describes the role of religion and culture in ancient medicine?

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