Which of the following is a NONLIVING part of an ecosystem?

Look at the diagram. Which item in the food chain is a producer (makes its own food?)

Which of these is NOT a decomposer?

Dr. Mario Molina is a scientist from Mexico who discovered that chemicals from aerosol sprays were harming the:

If rats were removed from an ecosystem, what other population might be in danger because of losing its food source?

Which of the following is a biome?

Plants and animals living in a rain forest must be adapted to what kind of climate?

One chemical that is destroying the ozone layer can be abbreviated:

Your friend asks you to help with an investigation. He has a shoebox, soil, small plants, rocks, and twigs. What might you and your friend be doing?