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What common problem do humans, termites, and prairie dogs face when living in enclosed structures?

• Lack of food supply

• Predator attacks

• Buildup of carbon dioxide

• Insufficient space

What is the primary function of a large termite mound in relation to the air inside?

• To store excess food

• To act as a large lung for ventilation

• To provide protection from predators

• To regulate internal humidity

How do termite mounds achieve ventilation using natural temperature cycles?

• They use internal fans powered by the termites.

• They absorb CO2 through the mound walls.

• Air moves up and down due to temperature differences between outer chambers and the core.

• Termites manually pump air in and out.

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What happens when air is blown across the top of a piece of paper, causing the paper to lift?

• The air pressure above the paper increases, pushing it up.

• The air pressure below the paper decreases, pulling it up.

• A lower pressure area is created above the paper, pulling it up.

• Static electricity causes the paper to rise.