input: OPTIONS:
- carcinogens
- rivalry
- smoking tobacco
- Heavy rains
- happiness
- treatment
- Pesticides
- high temperature Now, answer this question: Fact 1: Most carcinogens cause cancer by producing mutations in DNA. Fact 2: Cancer can cause death. Given the two facts above, what can cause death?
A:
output: carcinogens

input: OPTIONS:
- Allergies
- lungs
- antigens
- bacteria
- parasites
- atoms
- red blood cells
- acetic acid Now, answer this question: Fact 1: Antigens are molecules that the immune system recognizes as foreign to the body. Fact 2: Children are born with an immature immune, or defense, system. Given the two facts above, what are molecules that the defense system recognizes as foreign to the body?
A:
output: antigens

input: OPTIONS:
- Oceans rising
- Deforestation
- Greenhouse gasses
- Burning fossil fuels
- Greenhouse gases
- Movement of an air mass
- Leaving lights on
- tectonic plates coliding Now, answer this question: Fact 1: Burning fossil fuels increases the carbon in the atmosphere. Fact 2: More carbon in the atmosphere means atmospheric warming. Given the two facts above, what causes global warming?
A:
output:
Burning fossil fuels