Fact 1: Decomposition increases the amount of nutrients in the soil. Fact 2: Organic matter is the plant and animal residue in the soil at various stages of decomposition. Given the two facts above, what does plant and animal residue increase in soil?

OPTIONS:
- Scent
- Temperature
- Bugs
- rainfall
- fossil fuels
- Water
- energy
- Nutrients

Answer: Nutrients

Problem: OPTIONS:
- acetic acid
- brains
- chemistry
- androgens
- photons
- people
- Most plants
- light energy
Q: Fact 1: Sex hormones are chemical messengers that control sexual development and reproduction. Fact 2: Androgens are male sex hormones. Given the two facts above, what are chemical messengers that control sexual development and reproduction?
Answer: androgens

Problem:OPTIONS:
- Coal
- Wind
- energy
- Petroleum
- trees
- Natural Gas
- Heat
- motors

Fact 1: Using renewable resources to generate power reduces greenhouse gases. Fact 2: Wind is a renewable energy source. Given the two facts above, which power source reduces greenhouse gases?
****
A: Wind

Fact 1: Most mollusks have shells. Fact 2: Mollusks are invertebrates and are no exception. Given the two facts above, some invertebrates may have which feature?
OPTIONS:
- invertebrate
- fat
- gills
- exception
- three
- mollusk
- complex
- shell
shell

Fact 1: Grasses supply most of the food consumed by people worldwide. Fact 2: Grasses are wheat and wild oats. Given the two facts above, what is a member of the group that supplies most of the food consumed by people worldwide?
OPTIONS:
- roots
- glucose
- insects
- humans
- animals
- Wild oats
- mammals
- it needs them

Answer: Wild oats

input with options: Fact 1: Killing microorganisms in food can be used to extend the shelf life of that food. Fact 2: Irradiation kills microorganisms that spoil food. Given the two facts above, what can irradiation do?
OPTIONS:
- Plant growth is reduced
- make food glow
- make food unsafe
- harm consumers
- depress neuronal excitability
- extend the shelf life of food
- major threat to health
- prevent heat loss
output:
extend the shelf life of food