input: OPTIONS:
- warmth
- solar energy
- Heat
- Pollution
- sand
- oxygen
- white
- clouds Now, answer this question: Fact 1: The sun causes water to evaporate more quickly by adding heat. Fact 2: Energy from the sun evaporates water from the oceans to make clouds. Given the two facts above, what does ocean water become when acted on by sunlight?
A:
output: clouds

Fact 1: Radioactive dating is used to determine the age of fossils. Fact 2: Geologists use fossils to determine the age of the rock layer that it was found in. Given the two facts above, what do geologists use to determine the age of rock layers?

OPTIONS:
- Chemical dating
- Mechanical dating
- Non radioactive dating
- blastoids
- single-celled organisms
- Seismometer
- Radioactive dating
- an electron microscope

Answer: Radioactive dating

Problem: OPTIONS:
- polluted rain
- disease
- humidity
- thunderstorms
- snow
- contamination
- Temperature
- harmful substances
Q: Fact 1: Gases from burning coal and oil dissolving in water in the atmosphere causes acid rain. Fact 2: Acid rain comes from polluted clouds. Given the two facts above, gases from burning coal and and oil dissolving in the atmosphere can cause what?
Answer: polluted rain

Problem:OPTIONS:
- rivers
- Drought
- Rain
- algae
- Wind
- Erosion
- trout
- fens

Fact 1: Lakes are formed by precipitation and runoff. Fact 2: Precipitation: Rain, hail and snow. Given the two facts above, which of the following can form lakes?
****
A: Rain

Fact 1: Condensation is when change from a gas into a liquid by reducing heat energy. Fact 2: Condensation is water from the air. Given the two facts above, water from the air occurs when it changes from gas into a liquid by reducing what?
OPTIONS:
- direct energy
- Energy.
- Time and energy
- kinetic energy
- heat energy
- energy
- warmth
- Temperature
heat energy

Fact 1: Sound can be used for communication by animals. Fact 2: Sound Sound waves are mechanical waves. Given the two facts above, what can be used for communication by animals?
OPTIONS:
- books
- Electrical energy
- electromagnetic energy
- nails
- chemical messengers
- mechanical waves
- encoded information
- ice

Answer:
mechanical waves