How+do+populations+survive--ecosystems+and+food+chains

=How do populations survive- ecosystems and food chains= Definitions and examples

Ecosystems - a group of plants and animals that share the same environment.

Anything that controls the growth or survival of a population is called a limiting factor, some are nonliving. Coyotes and raccoons compete with each other for resources such as water, food, and some times territory.

Part of the ecosystem is the food chain. A food chain is where different animals eat each other for energy, and plants get energy from the sun.

Both rivers and lakes are made of fresh water and also flow in and out of each other, they share characteristics and many species in both habitats.

Extinct - a species that has died out completely, like a dodo bird.

Threatened species - a species that is endangered of becoming endangered.

Carrying Capacity - the maximum population size that an area can support.


 * How Populations Survive**?

Populations survive by ecosystems,an ecosystem is a community of organisms together with their physical environment.

In these ecosystems there is a food chain,a food chain is a series of organisms interrelated in their feeding habits, the smallest being fed upon the larger one witch in turn feeds on the still larger one,etc.

For example the suns energies the grass then the grasshopper or some insect will feed upon it.

If we did not have these ecosystems we would never be in a healthy population. founded from the fifth grade science book.