A process where autotrophs use solar energy to create glucose, cellulose, or other forms of sugar. The first step in most food chains.

The energy stored in the tissues of plants and animals that can be used for energy when consumed. Referred to as biomass.

A form of sugar that is produced by photosynthesis.

Thermal energy usually in the form of body heat.

Radiant energy emitted by the Sun.

A gas produced by photosynthesis and used be respiration.

A gas produced by respiration and used by photosynthesis.

Used in chemical equations to mean equals.

A process done by autotrophs and heterotrophs to get energy out of food.

The energy molecule produced by respiration.

Energy of Motion. Examples include swimming, running, escaping predators.

The one and only variable that we change on purpose so that we can determine if it has an effect.

The variable we measure and use to determine if the tested variable did have an effect.

All other variables that we must keep the same in order to obtain reliable data.

Any organism that must eat or consume another organism for energy. Synonym is heterotroph.

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