The study of the interaction of living organisms with one another and with their environment is ___________.

The highes level of environmental organism is:

Check the components of an ecosystem

You are an omnivore. That means that you eat:

Organisms that use sunlilght direct;y to make food are:

A predator that preys on large animals is at the ___________ of the food chain.

_________ is a relationship in which two diffrent organisms live in close association with each other.

In a marrige relationship, which type of sybiosis should occur?

__________ is a symbiotic association is one in which one organism benefits and the other is harmed.

Water is returned to the atmosphere in the for of water vapor in two processes. They are:
(Check the two that apply.)

All organisms are composed mostly of __________.

During which of the following processes is carbon dioxide released into the environment?
(Check all that apply.)

One of the organisms in our biosphere can convert nitorgen gas into a form that plants can use. These organisms are:

The jungle taking over an abandoned city is an example of:

A biome is a large region charcterized by:
(Check all that apply.)

A biome can consist of only one ecosystem.

A treeless plain that has very low winter temperatures, little rainfall and is found in the Arctic, the Antarctic and the tops of mountains is called ____________.

What covers almost three-fourths of the Earth's surface?

If you traveled to the Benthic zone of the ocean, what would you experience?
(Check all that apply.

Corals start out as:

One important value of wetlands is that during heavy rains or spring snow melt, wetlands soak up large amounts of water and prevent __________.

____________ is an unwanted change in the environment caused by substances or forms of energy.

Examples of renewable energy include:
(Check all that apply.)

Setting aside public lands for wildlife is a way to protect ______________.

The three 'r's of conversation are:
(Check the three.)