Problem:OPTIONS:
- Conifers
- watershred
- fossils
- H2O
- Echinoids
- bubbles
- loose soil
- bones

Fact 1: Fossils are formed when layers of sediment cover the remains of organisms over time. Fact 2: Plants and animals are organisms. Given the two facts above, what forms when plants are covered in layers of sediment over time?
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A: fossils

Problem:OPTIONS:
- stamina
- knives
- proteins
- Energy.
- fear
- food
- arrows
- energy

Fact 1: An animal requires stamina to succeed at physical activities. Fact 2: Sheep hunting is a physically demanding hunt. Given the two facts above, an animal requires what to succeed at hunting?
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A: stamina

Problem:OPTIONS:
- strangulation
- breathe
- lead poisoning
- death
- hippocampus
- painful
- loss
- die

Fact 1: Brain cells die quickly if their oxygen supply is cut off. Fact 2: Air contains oxygen. Given the two facts above, what happens to brain cells when the air supply is cut off?
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A: death

Problem:OPTIONS:
- light
- sun
- Energy.
- rain
- forces
- energy
- Joules
- heat

Fact 1: When a hemisphere is tilted away from the sun , that hemisphere receives less direct sunlight. Fact 2: When the axis is pointed toward the sun, more light falls on that hemisphere. Given the two facts above, what does a planet receive more of when it is tilted?
****
A:
light