Vocabulary and pictures

 A group of organisms of one kind that live together in one location.

 A group of populations that live together.

 A role or job an organism has in an ecosystem.

 A kind of contest among populations with the same niche.

 A trait or characteristic that helps an organism to survive.

 Body structures that help an animal to survive.

 Actions that help an animal to survive.

 The movement of animals from one area to another in a regular cycle.

 The death of all the organisms of a species.

 Conditions in an ecosystem that keep a population from growing beyond a certain size.

 An animal that kills and eats other animals.

 An animal that is killed and eaten by another animal (predator).

 Helpful

 Does not help or harm; has no effect on

 Harmful