The Greek term areté means:

Cephalus defines justice as telling the truth and…

Explain why there are progressively less species at higher trophic levels.

What are the basic needs of all living organisms, and how do these needs vary across ecosystems?

How is solar energy transformed into usable energy within ecosystems?

Based on what you have learned, come up with an example of a carnivore in a particular ecosystem and give examples of what it might eat based on the types of organisms that would be available in that particular ecosystem.

Give an example of a food chain. 

Is energy recycled in ecosystems? If not, what happens to it?

How is energy transferred from one organism to another, and what limits this transfer?

Portions of electromagnetic waves M, N, and P are represented below (not drawn to scale): Rank the waves above in order of increasing energy.