Negative feedback is a control system that helps the body maintain homeostasis by sending a signal to a response.

New york city has 2,181 inhabitants per square mile. the state of alaska has 1.03 inhabitants per square mile. ecologists would say alaska has a low exponential growth population density birth rate carrying capacity

This is a scaffolding of protein fibers that us sell keep it shape in a cell division and cell movement

The smallest parts of these that retain their original properties are called