Fact 1: Most canyons are formed by flowing rivers through erosion over long periods of time. Fact 2: Deep canyons and valleys are carved out. Given the two facts above, what are formed by flowing rivers through erosion over long periods of time?

OPTIONS:
- deserts
- a hydraulic system
- deep valleys
- pyramids
- Calcium carbonate
- patch reefs
- buildings
- Sediment

Answer: deep valleys

Fact 1: Reptiles are a class of tetrapod vertebrates that produce amniotic eggs. Fact 2: Frogs are a type of reptile. Given the two facts above, what produces amniotic eggs?

OPTIONS:
- sharks
- ants
- a fish
- animals
- viruses
- Wasps
- bacteria
- frogs

Answer: frogs

Fact 1: Carpooling decreases the amount of cars used to travel to a place. Fact 2: Arrange carpools to conserve fuel. Given the two facts above, decreasing what during travel likely conserves fuel?

OPTIONS:
- the energy of the car
- air mass over Earth's surface
- the amount of cars used
- the size of the wheels
- the amount of water used
- kinetic energy
- preventing heat transfer
- energy usage

Answer: the amount of cars used

Fact 1: Preventing the transfer of heat from an organims 's body causes that organism to keep warm. Fact 2: Animals are organisms that have ingestive metabolism. Given the two facts above, preventing the transfer of heat from an animal 's body causes that animal to keep what?

OPTIONS:
- fur
- energy
- cold
- chilled
- warmth
- warm
- fats
- frozen

Answer:
warm