Problem:OPTIONS:
- mammals
- tortoises
- dogs
- chickens
- ducks
- humans
- crocodiles
- animals

Fact 1: Mammals breathe with the help of a diaphragm. Fact 2: Belly breathing uses the diaphragm, which helps relax the lungs. Given the two facts above, what breathes by relaxing the lungs?
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A: mammals

Problem:OPTIONS:
- arthropods
- warm-blooded
- birds
- mammals
- animals
- honeybees
- fur seals
- fish

Fact 1: Insects may live in large colonies and have complex social behaviors. Fact 2: Insects are just part of the Arthropod subdivision. Given the two facts above, what kind of animal can live in large colonies and have complex behaviors?
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A: arthropods

Problem:OPTIONS:
- They lay eggs
- the eyes
- Veins and arteries.
- eardrum
- four limbs
- layers of fat
- They have thick fur
- fur and fat

Fact 1: Platypus females lay their eggs in a burrow. Fact 2: Examples of monotremes are the Platypus and Echidna. Given the two facts above, what is the distinguishing feature of monotremes?
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A: They lay eggs

Problem:OPTIONS:
- air
- lungs
- people
- health
- humans
- the skin
- animals
- cells

Fact 1: Pollutants have a negative impact on the environment. Fact 2: Second, the environment is important to health. Given the two facts above, pollutants can harm ?
****
A:
health