If an insect eats a plant and a bird eats the insect, about how much energy from the plant is stored in the insect for the bird to use?

Which gas makes up 78% of the atmosphere but can only be used by plants after being converted by bacteria?

Which of the following is likely to be a pioneer species?

A consumer that eats a producer belongs to which trophic level?

A consumer that eats only producers is called a/an

What term is used to describe a specific, sequential flow of energy through an ecosystem?

What term is used to represent the various and diverse pathways of energy flow through an ecosystem?

Which organism would occupy the level on an energy pyramid with the most energy? CHOOSE ALL THAT APPLY!

In the carbon cycle, where do producers get their carbon?

When human and animals exhale, they release carbon back into the air by a process called

Fossil fuels form from...

How do plants get phosphorous?

What is one way that nitrogen becomes "usable" to plants?

Which process is referring to the conversion of carbon dioxide and water into sugar and oxygen in the presence of light energy?

The process of breaking down food to make energy is called

Organisms that obtain their energy by breaking down the bodies of dead organisms and waster are referred to as

What type of plants would you expect to find on an abandoned farm that has remained undisturbed for 150 years?

During ecological succession, a final and stable community is referred to as a/an...

Humans produce excess nitrogen and phosphorous which in turn can run-off into bodies of water causing harm to the ecosystem. What is the major cause of this disruption?