Fact 1: Mammals can also generate little bursts of heat by shivering. Fact 2: Heat is produced by muscle action and shivering. Given the two facts above, what can mammals generate heat with?

OPTIONS:
- Muscle action
- with their fur
- fur and fat
- layers of fat
- hair
- Animal fur
- waistlines
- Bone action

Answer: Muscle action

Problem: OPTIONS:
- mechanical
- cancer
- respiration
- water vapor
- permineralization
- loose soil
- worldwide problems
- harmful substances
Q: Fact 1: Breaking apart rocks can cause debris. Fact 2: Marine debris is a worldwide problem. Given the two facts above, what can breaking apart rocks cause?
Answer: worldwide problems

Problem:OPTIONS:
- gas
- CO 2
- fossil fuels
- air
- nose
- O2
- water
- CO2

Fact 1: Skin is used for breathing air by frogs. Fact 2: Frogs breathe with their lungs and skin. Given the two facts above, what do frogs breathe with their lungs?
****
A: air

Fact 1: Looking at bright objects has a negative impact on the eyes. Fact 2: Outside, the sun is bright. Given the two facts above, looking at what has a negative impact on the eyes?
OPTIONS:
- Pollution
- Allergies
- disease
- the sun
- clouds
- sun's heat
- the moon
- glasses
the sun

Fact 1: Gravity causes objects that have mass to be pulled down on a planet. Fact 2: Astronomy is the scientific study of the stars, planets and the other celestial bodies. Given the two facts above, what causes objects to be pulled down on a celestial body?
OPTIONS:
- power
- friction
- black hole
- wind
- gravity
- orbit
- earth
- eclipse

Answer: gravity

input with options: Fact 1: Producers are organisms that produce food for themselves and other organisms. Fact 2: Most plants are producers. Given the two facts above, what makes food for themselves and other organisms?
OPTIONS:
- agriculture
- honeybees
- water
- sunlight
- most plants
- viruses
- Conifers
- Chlorophyll
output:
most plants