Q: What do chemical reactions need to be activated? A:
OPTIONS:
- food
- space
- products
- energy

Answer: energy

Question: Q: Evidence for the presence of what on mars makes scientists think that life might have existed there in the past? A:
OPTIONS:
- gas
- plasma
- air
- water
Answer: water

input with options: Q: What did volcanic gases help to form on earth? A:
OPTIONS:
- water
- plants
- rocks
- atmosphere
output: atmosphere

Q: Q: What happens when when the immune system does not work properly? A:

OPTIONS:
- anemia
- diabetes
- stroke
- immunodeficiency

A: immunodeficiency

input: OPTIONS:
- alloys
- potassium gas
- rust
- hydrogen gas Now, answer this question: Q: Acids can also react with metals, and when they do they produce what? A:
A:
output: hydrogen gas

Question: Q: What are carbonated beverages pressurized with? A:
OPTIONS:
- helium
- dioxide
- hydrogen
- co2
Answer:
co2