Ecology 7th grade

Energy on our planet comes from this.

An organism that eats both plants and animals.

Organisms that make their own food.

Grass is eaten by a praire dog, prairie dog is eaten by coyote. This is an example of

Coyotes prey on prairie dogs, in order for prairie dog population to survive, which is true

The study of the relationships between living things and the environment.

Teeth used for stabbingand killing, tearing and piercing

Smallest unit of ecological organization is

BONUS: The total mass (quantity) at each level trophic level.

Each level of the energy pyramid, only __% of the available energy is passed on

Egrets, herons, marsh crabs, and algae are studied, but not water or soil. What level is this?

     The total numbers of individuals at each level.

BONUS: Very small free floating aquatic plants that get energy from the sun.

Another word for producer

Which of these is a population?

What's an abiotic element that may change an area?

True or False- all populations in a community depend on food and shelter.

 An animal that only eats other animals.

A community of organisms where each member is eaten in turn by another member.

Feed on plants or other animals.

BONUS: Tiny animals that cannot make their own food.

In an energy pyramid, which level has the most available energy?

5 Levels of Organization in the environment are

Organisms that feed on decaying matter.

Eagle eats a mouse, mouse eats berries. What is the eagle considered?

The study of how living things interact with each other and the environment is

General name for an animal that only eats plants.