Problem:OPTIONS:
- desert
- disease
- biological diversity
- Sedimentary rock
- absorb light energy
- sunlight
- ghosts
- Chlorophyll

Fact 1: Carbon may be stored in sedimentary rock for millions of years. Fact 2: Carbon is an essential element for almost all plant and animal life. Given the two facts above, what does almost all plant and animal life depend on?
****
A: Sedimentary rock

Fact 1: Skin is used for protecting the body from harmful substances. Fact 2: Skin is a protective organ. Given the two facts above, a protective what protects the body from harmful substances?
OPTIONS:
- hair
- molecule
- keratin
- style
- beacon
- organ
- fur
- tissue
organ

Fact 1: The emission of sulfur dioxide causes acid rain. Fact 2: Polluted rain is called acid rain . Given the two facts above, what causes pollution in rain?
OPTIONS:
- sulfur dioxide
- carbon dioxide
- nitrogen
- contamination
- smog
- hydrogen
- fossil fuels
- flooding

Answer: sulfur dioxide

Question: Fact 1: Erosion of soil has a negative impact on the environment. Fact 2: Soil Erosion Soil erosion is a natural process. Given the two facts above, what kind of process can have a negative impact on an environment?
OPTIONS:
- coal
- natural
- Pesticides
- flooding
- cigarettes
- Smoking
- Cars
- burning
Answer: natural

input with options: Fact 1: Keeping food cold is used for keeping food fresh. Fact 2: Keep your food fresh, simple and as natural as possible. Given the two facts above, what is used to keep foods as simple and as natural as possible?
OPTIONS:
- Energy
- sodium
- lipids
- heat
- RNA
- cold
- fibers
- sugar
output: cold

Problem: OPTIONS:
- friendly
- deadly
- animals
- gentle
- safe
- harm them
- goats
- reproduce
Q: Fact 1: Some parasites kill their host, but most do not. Fact 2: Humans are the unfortunate hosts of the deadly parasite. Given the two facts above, what parasites kill their human, but some do not?
Answer:
deadly