Problem: OPTIONS:
- Eggs
- feet
- Wings
- alveoli
- Lungs
- ovaries
- rings
- Limbs
Q: Fact 1: Amphibians are the first true tetrapods, or vertebrates with four limbs. Fact 2: Ancathostega is one of the earliest tetrapods found, and by far the most complete. Given the two facts above, what do ancathostega have four of?
Answer: Limbs

Problem:OPTIONS:
- Chemical energy
- barnacles
- Electrical energy
- a doorbell
- sensory neurons
- peachleaf willow
- Veins and arteries.
- male hormones

Fact 1: Testosterone stimulates the reproductive organs to develop into male organs. Fact 2: Androgens are male hormones, like testosterone. Given the two facts above, what stimulates the reproductive system to form male organs in growth?
****
A: male hormones

Fact 1: Aprism is used for refracting light. Fact 2: Refraction is the bending of a ray of light. Given the two facts above, what tool can be used to bend rays of light?
OPTIONS:
- Compass
- a wave
- fibers
- Magnet
- Pliers
- Prism
- forces
- Newton
Prism

Fact 1: An animal usually requires a warm body temperature for survival. Fact 2: Warm blooded animals have a constant body temperature. Given the two facts above, animals usually require what for survival?
OPTIONS:
- organic molecules
- organic material
- Fluctuating body temperature.
- Ears
- food and shelter
- Cold blood
- Organic compounds
- Constant body temperature.

Answer: Constant body temperature.

Question: Fact 1: When water freezes , that water expands. Fact 2: Water in the rocks pushes out when it freezes thus causing the rocks to break. Given the two facts above, what does frozen water break?
OPTIONS:
- lake
- ice
- crust
- sky
- rivers
- nektar
- Weight
- rock
Answer: rock

input: OPTIONS:
- fossil fuels
- gasoline
- kerosene
- energy
- bunker fuel
- Energy.
- fur and fat
- water Now, answer this question: Fact 1: Acar engine usually converts gasoline into motion and heat through combustion. Fact 2: Material is classified as a combustible liquid. Given the two facts above, what does an engine use as liquid fuel?
A:
output:
gasoline