Problem:OPTIONS:
- Movement
- waves
- heat
- collide
- moves
- erosion
- break off
- friction

Fact 1: Faulting of rock in Earth 's crust causes earthquakes. Fact 2: Fault zones are plates in the earth that slide and collide. Given the two facts above, plates in the earth do what which causes earthquakes?
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A: collide

Problem:OPTIONS:
- get chemical reactions started
- Make it radioactive
- reusing things
- chemical changes
- Harm consumers who eat it
- Kill e-coli bacteria
- preventing heat transfer
- Cause parasites to reproduce

Fact 1: Irradiating food can be used to kill existing microorganisms in the food. Fact 2: Bacterial microorganisms are representative of these biological factors, and e-coli food poisoning is a good example. Given the two facts above, irradiating food can do which of the following?
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A: Kill e-coli bacteria

Problem:OPTIONS:
- amphibians
- squids
- worms
- shield
- alligators
- sea urchins
- Annelids
- chicken

Fact 1: Scales are used for protection by scaled animals. Fact 2: Like all reptiles, alligator skin is covered with rows of scales. Given the two facts above, what uses its skin for protection?
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A: alligators

Problem:OPTIONS:
- salamanders
- Plant reproduction
- peachleaf willow
- permineralization
- sexual reproduction
- Veins and arteries.
- Chlorophyll
- Most plants

Fact 1: Fertilization of gametes produces a diploid zygote. Fact 2: Sexual reproduction requires formation of gametes, followed by fertilization. Given the two facts above, what produces a diploid zygote?
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A:
sexual reproduction