input with options: Fact 1: Air pollution harms the respiratory and circulatory systems. Fact 2: Cars are a significant source of air pollution. Given the two facts above, what harms the respiratory and circulatory systems?
OPTIONS:
- oil
- rain
- sulfur
- cars
- tires
- coal
- tar
- bicycles
output: cars

Q: Fact 1: Gases from burning coal and oil dissolving in water in the atmosphere causes acid rain. Fact 2: Acid rain can destroy soil. Given the two facts above, gasses from burning coal can lead to what?

OPTIONS:
- soil destruction
- nuclear power
- Electrical energy
- Pollution
- grass
- flow of electrons
- radio waves
- heat energy

A: soil destruction

input: OPTIONS:
- summer end
- dry and hot
- summer start
- barrel-shaped
- dry conditions
- winter
- after winter
- climate Now, answer this question: Fact 1: The color of leaves on deciduous trees usually changes in the autumn season. Fact 2: Autumn is a season of transistion as the warm summer days fade giving way to cooler weather. Given the two facts above, during what time frame do deciduous trees' leaves change color?
A:
output: summer end

Fact 1: Carbon cycles quickly between organisms and the atmosphere. Fact 2: Atmosphere is the blanket of air around the earth. Given the two facts above, carbon cycles quickly between organisms and?

OPTIONS:
- O2
- DNA
- comets
- air
- Aves
- ocean
- satellites
- lung

Answer: air

Problem: OPTIONS:
- Energy.
- ravens
- bushes
- photons
- our star
- Jellyfish
- bamboo
- barnacles
Q: Fact 1: If an object is black then that object absorbs all visible light. Fact 2: All ravens are black . Given the two facts above, what absorbs all visible light?
Answer: ravens

Fact 1: Operating an automobile usually requires fossil fuels. Fact 2: Global warming is caused largely by fossil fuel use. Given the two facts above, what contributes to global warming?

OPTIONS:
- using wind farms
- recycling
- burning coal
- Greenhouse gases
- operating an automobile
- chlorofluorocarbons
- Greenhouse gasses
- nuclear energy

Answer:
operating an automobile