__________ is the byproduct of photosynthesis.

A ___________ shows who eats what in nature.

Lions are found in

Acid rain is caused by

The response of organism to the cycles of day and night is known as

____________ is called green house gas.

The living things around us are the _________ components of the environment.

Animals that are achieve during night are called

The amount of water on the earth is

_______ is the primary source of energy.