Problem:OPTIONS:
- colder weather
- less fat
- In the winter
- hard outer covering
- layers of fat
- thinner fur
- nutrients
- hydrogen and oxygen

Fact 1: Thick fur can be used for keeping warm. Fact 2: Becuse of that, the fat layer was needed to keep warm, now that the fur coat was removed. Given the two facts above, what do animals without thick fur need to stay warm?
****
A: layers of fat

Fact 1: Carbon dioxide concentrations in the air have increased over the last decade dramatically. Fact 2: Decades have 10 years. Given the two facts above, concentrations of what in the air have increased over the last 10 years dramatically?
OPTIONS:
- chlorofluorocarbons
- fossil fuels
- ozone
- Greenhouse gases
- Greenhouse gasses
- oxygen
- carbon dioxide
- air molecules
carbon dioxide

Fact 1: Producers make food from inorganic molecules. Fact 2: Decomposition is the breakdown of organic molecules into inorganic molecules. Given the two facts above, what helps producers make food?
OPTIONS:
- Decomposition.
- heat energy
- honeybees
- Chemical energy
- Electrical energy
- animals
- an electric stove
- Power plants

Answer: Decomposition.

Question: Fact 1: Decomposition increases amount of organic matter in soil. Fact 2: Bacteria initiate decomposition of plants. Given the two facts above, what would increase the amount of organic matter in soil?
OPTIONS:
- coal
- fossil fuels
- Pesticides
- mussels
- bacteria
- nutrients
- burning
- shrub beds
Answer: bacteria

input with options: Fact 1: Molecules of tRNA bring amino acids to the ribosome in the correct sequence. Fact 2: Aminoacylation is the adding of an amino acid to the tRNA molecule. Given the two facts above, what bring amino acids to the ribosome in the correct sequence?
OPTIONS:
- Chemical energy
- Aminoacylation
- Dilution
- a delta
- Cooking
- heat or cold
- it needs them
- A Greek letter
output: Aminoacylation

Problem: OPTIONS:
- animals
- fish
- blood types
- positive
- immunogens
- cats
- humans
- the skin
Q: Fact 1: Antibodies are large, Y-shaped proteins that recognize and bind to antigens. Fact 2: ALL immunogens are antigens. Given the two facts above, what can antibodies (large Y-shaped proteins) recognize and bind to?
Answer:
immunogens