Q: Fact 1: Mammals have a layer of fat under the skin to help insulate the body. Fact 2: All humans are mammals. Given the two facts above, what has a layer of fat under the skin to help insulate the body? | OPTIONS:
- goats
- snakes
- hamburgers
- animals
- humans
- rabbit
- bears
- fur
A: humans

Q: Fact 1: Thyroid hormones increase the rate of metabolism in cells throughout the body. Fact 2: Thyroid hormone is made by the thyroid gland in the neck. Given the two facts above, what in the neck is responsible for an increase in the rate of metabolism in cells? | OPTIONS:
- Veins and arteries.
- thyroid gland
- veins
- Energy.
- spine
- temperature
- energy usage
- liver
A: thyroid gland

Q: Fact 1: Aairplane is used for moving people across bodies of water. Fact 2: Most airplanes use gas turbines. Given the two facts above, _ are used for moving people across bodies of water.? | OPTIONS:
- dolphins
- engines
- gas turbines
- electricity
- streams
- rivers
- arteries
- animal transport
A: gas turbines

Q: Fact 1: Infection can cause bodily tissues to swell. Fact 2: Joints swell painfully. Given the two facts above, what can infection cause? | OPTIONS:
- Joint pain
- Limber joints
- Loose joints
- influenza
- chickenpox
- disease
- Money creation
- anemia
A: Joint pain