List the five organizational levels of the biosphere in order, from simplest to most complex.

Differentiate between a community and an ecosystem.

What is a trophic level? Name the first trophic level in any food chain.

Explain the "10% Rule" of energy transfer in an ecosystem. Why are energy pyramids always upright?

Draw a simple diagram of the carbon cycle, including the processes of photosynthesis, respiration, and combustion.

What is nitrogen fixation, and name one type of organism responsible for it.

Define biomagnification. In which trophic level would you expect to find the highest concentration of a toxin like DDT?

What is eutrophication, and what are its primary causes?

Name two major greenhouse gases contributing to global warming.

What is the primary cause of acid rain?

Explain how CFCs damage the ozone layer.

Define sustainable development.

State the "4Rs" of waste management.

Differentiate between renewable and non-renewable energy sources, giving one example of each.

What is meant by a "carbon footprint," and suggest one way an individual can reduce theirs.