Which of the following is the best example of a primary consumer?

On average, what percent of the total energy consumed at a trophic level is available to organisms in the next trophic level?

This is several interconnected food chains.

What is needed to define a population?

Several different interacting populations makeup a _____________.

Aquatic ecosystems are ____________ than terrestrial ecosystems.

These may be physical, conceptual or mathematical.

Which of the following is an example of a specialist with a narrow niche and uses unique resources.

This is a period of dormancy in response to decreasing sunlight and temperatures.