Which of the following represents the reactants (raw materials) of photosynthesis?

The ultimate source of energy for all living things is

Mushrooms and bacteria are common

The most energy is available at the ___ level of the pyramid

An organism that obtains energy by feeding on other organisms is a

The arrows in a food chain represent ____ moving through an ecosystem when one organism eats another.

____ eat only plants

____ eat both plants and animals

____ eats the bodies of things that have already died.

The process that plants use to make their own food using sunlight, water and carbon dioxide is called

The many overlapping food chains in an ecosystem make up a

Which of the following organisms would NOT be considered an autotroph?

In this food chain, the caterpillar would be considered a

As you go up the pyramid the amount of energy available ____

What level consumer is the deer?