Chapter 2 Review

Match it! Select the correct answer from the pull down...Good luck!

During the carbon cycle, in what form are carbon atoms generally returned to the atmosphere?

In the nitrogen cycle, nitrogen is continuously recycled. Which types of organisms break down nitrogen compounds in dead organisms and recycle them into the soil?

Which is not a pathway by which plants obtain nitrogen in usable form?

Eating a sweet potato can provide energy for human metabolic processes. What is the original source of this energy?

What is released at each level of a pyramid of energy?

In which type of ecological relationship do two organisms benefit from living together?

Ecology is the study of interactions between_____

The portion of Earth that supports that existence of living thngs is the ____