Q: Fact 1: Sand dunes are formed by the wind transporting and depositing sand. Fact 2: Dune grass is very important to the preservation of sand dunes. Given the two facts above, what prevents erosion on dunes?

OPTIONS:
- streams
- cacti
- wind
- LEDs
- fibrous
- grass
- fibers
- bamboo

A: grass

input: OPTIONS:
- growth
- hormones
- proteins
- salinity
- traits
- toughness
- senses
- motility Now, answer this question: Fact 1: Better senses have a positive impact on an animal 's survival. Fact 2: Life is reduced to survival . Given the two facts above, an animal will have better chances at life if it has better what?
A:
output: senses

Fact 1: Atelephone is used for communication by humans over long distances. Fact 2: Long-distance telephone calls can also use radio waves or microwaves. Given the two facts above, what waves does a telephone use?

OPTIONS:
- unique
- power
- energy
- fibers
- sound
- strong
- Radio
- two

Answer: Radio

Problem: OPTIONS:
- mines
- cold
- inside
- outside
- threatened
- on the wall
- dangerous
- in a drawer
Q: Fact 1: If something is outside during the day then that something will receive sunlight. Fact 2: Direct sunlight is harmful to paintings. Given the two facts above, it is harmful to place paintings where?
Answer: outside

Problem:OPTIONS:
- uneven heating
- volcanoes
- hurricanes
- Physical weathering
- It gets heated up
- Water expanding
- even heat
- Greenhouse gases

Fact 1: Uneven heating of the Earth 's surface cause wind. Fact 2: Hurricanes are made of wind. Given the two facts above, what causes hurricanes on the Earth's surface?
****
A: uneven heating

Problem:OPTIONS:
- storms
- oil
- cars
- coal
- air
- wind
- carbon
- water

Fact 1: Gases released during the use of fossil fuels causes global warming. Fact 2: Fossil fuels are coal, oil, and natural gas. Given the two facts above, what causes global warming?
****
A:
coal