Fact 1: Ants communicate with chemicals called pheromones. Fact 2: Physiologically, ants leave a trail of pheromones, which other ants then follow. Given the two facts above, how do ants communicate to other ants to encourage them to follow?
OPTIONS:
- Skywriting
- Electrical energy
- Using a phone to communicate
- Leaving a written communicatio
- Something coming from a gland
- By wind and rain
- Chemical energy
- Leaving chemical trails
Leaving chemical trails

Fact 1: Sweat wets the skin, and when it evaporates, it cools the body. Fact 2: Sweat is made of salt and water. Given the two facts above, what wets the skin, and when it evaporates, cools the body?
OPTIONS:
- acetic acid
- salt and water
- Chlorophyll
- peachleaf willow
- reducing acid rain
- Heat energy
- heat or cold
- hydration

Answer: salt and water

Question: Fact 1: Gases from burning coal and oil dissolving in water in the atmosphere causes acid rain. Fact 2: Acid rain can harm plant life and actually kill plants. Given the two facts above, gases from burning coal and oil dissolving in water can harm what?
OPTIONS:
- soils
- people
- oil reserves
- plant life
- animals
- coal factories
- humans
- gas buildup
Answer: plant life

input with options: Fact 1: Ethanol is produced by alcoholic fermentation of the glucose in corn or other plants. Fact 2: Ethanol is the most widely used biofuel today. Given the two facts above, what is produced by alcoholic fermentation of the glucose in corn or other plants?
OPTIONS:
- Chemical energy
- it helps plants in growing
- the corniest beverage
- Organic compounds
- the least used fuel source
- the least used biofuel
- the most widely used biofuel
- A compound that donates proton
output: the most widely used biofuel

Q: Fact 1: Most invertebrates have a more complex nervous system. Fact 2: Corals, and invertebrates in general, are delicate creatures. Given the two facts above, what can have a more complex nervous system?

OPTIONS:
- a fish
- Birds
- insects
- coral
- the Sun
- ducks
- rocks
- air molecules

A: coral

Fact 1: Cancer is a disease in which cells divide out of control. Fact 2: Cancer is also caused by a mutation. Given the two facts above, what can mutations lead to in which cells divide out of control?
OPTIONS:
- Smoking
- resistance
- a disease
- viruses
- AIDS
- bacteria
- Leptospirosis
- cigarettes
a disease