Problem:OPTIONS:
- food
- home
- wealth
- gametes
- Energy
- money
- oxygen
- Energy.

Fact 1: Tunicates reproduce sexually. Fact 2: Sexual reproduction requires both male and female gametes. Given the two facts above, what do tunicates need to reproduce?
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A: gametes

Problem:OPTIONS:
- smell and taste
- Greenhouse gases
- deforestation
- human interaction
- animal control
- human thoughts
- human recycling
- Pollution

Fact 1: Habitat destruction causes animals to move to find shelter in another habitat. Fact 2: Habitat destruction due to human interaction is a problem. Given the two facts above, what causes animals to move to find shelter in another habitat?
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A: human interaction

Problem:OPTIONS:
- nitrogen
- glucose
- SO2
- water
- Joules
- oxygen
- fluid
- liquid

Fact 1: Arteries generally carry oxygen-rich blood. Fact 2: Arteries and veins are blood vessels. Given the two facts above, what do blood vessels carry?
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A: oxygen

Problem:OPTIONS:
- prevent heat loss
- coal burning
- it has a positive impact on it
- reducing acid rain
- pollution
- greenhouse gases
- Something that makes plants green
- Enriches the soil

Fact 1: Conserving resources has a positive impact on the environment. Fact 2: Recycling conserves natural resources. Given the two facts above, what does recycling do to the environment?
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A:
it has a positive impact on it