If a kestrel eats a mouse that eats grass, the kestrel is a

The best way to represent a large, complex system, such as the nitrogen cycle, would be a

An invasive species is moved from one ecosystem to another. After it has been moved the species is __________________ to the new ecosystem.

A group of land ecosystems with similar climates and organisms is called a(n)

An organisms habitat provides

By looking at the skull of a mammal you can tell if the animal is a(n)

The many overlapping food chains in an ecosystem make up a(n)

Consumers that eat both plants and animals are called

Mushrooms, bacteria and mold are types of _______________.

The first organism in a food chain is always a

Which process is part of the carbon-oxygen exchange (carbon cycle)?

Scientist use models to show relationships between organisms, an example of such a model would be a(n):

How does the nitrogen cycle benefit an ecosystem?

The grasses and trees in this pyramid have the __________amount of energy in the ecosystem.

Energy for producers in the food chain comes directly from the ____________.

Water, nitrogen, carbon dioxide, and oxygen are examples of substances __________between the biotic and abiotic parts of an environment.

A tick living on a dog represents which type of relationship.

A producer is a

Nitrogen fixing bacteria

Biotic factors in the environment are

Abiotic factors in an environment are

Which of these is a relationship between organisms

What are the 3 main cycles in the environment?

One organism benefits and the other is unharmed

Both organisms benefit

One organism benefits and the other is hurt

All the non living and living parts of an environment make up the

A species that has been moved to an area that impacts the local ecosystem.

In an ecosystem, when the population of rabbits increases the population of wolves will?