Q: Which group of organisms would all be found living in a tropical rain forest? OPTIONS:
- Lizards, insects, cacti, kangaroos
- Vines, palm trees, tree frogs, monkeys
- Evergreens, moose, weasels, mink
- Lichens, mosses, caribou, polar bears
A: Vines, palm trees, tree frogs, monkeys

In one of the steps of the carbon cycle, a person exhales a molecule of carbon dioxide (CO2) into the atmosphere. Which of the following is most likely to happen next to the atom of carbon in this molecule?
OPTIONS:
- It may be used as part of a sugar in a plant.
- It may become part of a protein in an animal.
- It may be consumed as a fossil fuel is burned.
- It may be decomposed into carbon and oxygen by a bacterium.

It may be used as part of a sugar in a plant.

Q: Which of the following forms of energy is released or absorbed in most chemical reactions? ---- OPTIONS:
- light energy
- electrical energy
- sound energy
- heat energy

A: heat energy

Which statement describes animal embryos?
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OPTIONS:
- display all the features of an adult
- represent the earliest stage of development
- have the same number of cells as a fertilized egg
- have half the number of chromosomes as an adult

represent the earliest stage of development

Question:
In the human body, which system functions primarily to defend the body against disease?
OPTIONS:
- digestive
- immune
- nervous
- respiratory
Answer:
immune

*Question*: Data indicate that chemical pollutants contaminate 53% of the waterways that empty into the Chesapeake Bay. These chemical pollutants are found in the tissues of animals living in the bay. Which group of people who live away from the bay might be most affected by these chemical pollutants? OPTIONS:
- people who walk near the bay
- people who read books about the bay
- people who consume fish from the bay
- people who own boats docked in the bay
*Answer*:
people who consume fish from the bay