Principles of Ecology

–One organism benefits at the expense of another organism.

–An area where an organism lives.

the study of the interactions between organisms and their environments.

eat other heterotrophs

This picture represents

Which would be an abiotic factor for a tree in the forest?

Where is the largest concentration of nitrogen found?

What is the name of the process in which bacteria convert nitrogen into its usable form?

Temperature, air, sunlight, soil, rainfall, or other available nutrients are examples of...

The relationship between two or more organisms that live together and benefit from each other.

What term best describes the bee's role of gathering pollen?

Which organism in the picture is a primary consumer?

eat fragments of dead matter in ecosystems

–A biological community and all of the abiotic factors that affect it.

–the portion of Earth that supports life.

The living factors in an organism’s environment.

Choose the answer that shows the correct amount of energy that each level has. ( Bottom to top)

The oceans, lower atmosphere, and continents are parts of the ....

eats only plants

Organism that gets energy by consuming other organisms.

Close relationships that exists when two or more species live together.

eat both plants and animals

–A relationship in which one organism benefits and the other is neither helped nor harmed.

Individual organisms of a single species that share the same geographic at the same time.

A role or position that an organism has in its environment

–A large group of ecosystems that share the same climate and have similar types of communities.

–The nonliving factors in an organism’s environment.

Collects energy from Sunlight or inorganic substances( non living things) to produce food.

The act of one organism consuming another organism for food.

A group of interacting population that occupy the same geographic area at the same time.