Which of the Following Terms Describes All Organisms on Earth

question 55

Multiple Choice

Which of the following terms describes all organisms on Earth plus their environments?

• A) biosphere
• B) ecosystem
• C) habitat
• D) species

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Definitions:

Catalyst

A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.

Equilibrium System

A system in which dynamic processes occur at equal rates in opposite directions, establishing a stable condition that does not change over time.

Activation Energy

The smallest quantity of energy necessary to start a chemical reaction.