Introversia

Population Dynamics. - ppt video online download : Principles of Population Growth A population is a group of organism, all of the same species, that live in a specific area. There are population of spruce trees, populations of maple trees, of bluebirds, dandelions, fruit flies, and house cats. Every organism you can think of is a member of a population. A healthy population will grow and die at a relatively steady rate unless it runs out of water, food, or space, or is attacked in some way by disease or predators.