Fact 1: Most invertebrates have a more complex nervous system. Fact 2: Invertebrates are animals without a backbone. Given the two facts above, what mostly have a more complex nervous system?

OPTIONS:
- nerve cells
- protist
- animals without backbone
- remains of prehistoric life
- members of their own species
- sensory neurons
- Veins and arteries.
- bacteria

Answer: animals without backbone

Fact 1: Ice wedging is when ice causes rocks to crack by expanding in openings. Fact 2: Ice wedging is the most important form of mechanical weathering. Given the two facts above, when ice causes rocks to crack by expanding in openings, what is this called?

OPTIONS:
- In the winter
- smoking
- icing
- fissures of hot, acidic water
- mechanical weathering
- graptolites
- Inches or fractions of inches.
- rocking

Answer: mechanical weathering

Fact 1: Heating a liquid can be used to identify that liquid 's boiling point. Fact 2: Boiling is the conversion of a liquid to a gas. Given the two facts above, what can be learned from heating a liquid?

OPTIONS:
- The bending of a ray of light
- When it becomes a gas
- chemical equations
- When it becomes a solid
- kinetic energy
- When its mass increases
- When it condenses
- matter vibrating

Answer: When it becomes a gas

Fact 1: Insulin helps cells take up glucose from the blood. Fact 2: Helps insulin regulate blood sugar. Given the two facts above, what is regulated by insulin?

OPTIONS:
- Energy.
- animals
- Energy
- Balance
- sleep
- heat
- sugar
- fat

Answer:
sugar