Problem:OPTIONS:
- Stereos
- humans
- TVs
- Animals
- Mammal
- organisms
- pigeons
- Plants

Fact 1: Hearing is used for sensing sound by animals. Fact 2: Sound waves enter the ear, and are then amplified. Given the two facts above, what uses ears to hear?
****
A: Animals

Fact 1: An animal requires air for survival. Fact 2: Air is mostly nitrogen and oxygen. Given the two facts above, which of the following gases does an animal need to survive?
OPTIONS:
- oxygen
- blood
- carbon monoxide
- food
- glycogen
- helium
- H20
- warm
oxygen

Fact 1: Carbon may be stored in sedimentary rock for millions of years. Fact 2: Sedimentary Rocks One of the commonest sedimentary rocks is sandstone. Given the two facts above, what element may be stored in sandstone for millions of years?
OPTIONS:
- copper
- calcium
- carbon
- chemicals
- heat
- iron
- rock
- fossils

Answer: carbon

Question: Fact 1: Earth 's tilt on its rotating axis causes seasons to change. Fact 2: Because the daylight changes with the seasons, ActiveEarth does, too. Given the two facts above, earth 's tilt on its rotating axis causes _to change?
OPTIONS:
- daylight
- migrate
- heat
- distance
- friction
- temperature
- Heat energy
- climate
Answer: daylight

input with options: Fact 1: Wings are part of the exoskeleton and attached to the thorax. Fact 2: Behind the head is the thorax. Given the two facts above, wings are part of the exoskeleton and attached where?
OPTIONS:
- insects
- Earth orbiting the Sun
- h2o
- layers of fat
- an organism's body
- tail
- objects that have mass
- behind the head
output: behind the head

Problem: OPTIONS:
- vases
- Fungi
- models
- Trees
- Conifers
- plants
- seeds
- greenhouses
Q: Fact 1: All plants have a characteristic life cycle that includes alternation of generations. Fact 2: Plants have chlorophyll and an alternation of generations . Given the two facts above, what have chlorophyll and a characteristic life cycle?
Answer:
plants