Fact 1: Muscle contraction occurs when muscle fibers get shorter. Fact 2: Contraction of the muscle straightens the leg. Given the two facts above, what happens to your leg when muscle fibers shorten?
OPTIONS:
- they bend
- It decreases
- It straightens
- permineralization
- It expands
- Damages them
- Localized damage
- Dehydration

Answer: It straightens

Fact 1: Aggression is behavior that is intended to cause harm or pain. Fact 2: If they are around aggressive dogs, they learn to be aggressive. Given the two facts above, what can learn behavior that is intended to cause harm or pain?
OPTIONS:
- the Sun
- whales
- bacteria
- humans
- water
- Birds
- cats
- dogs

Answer: dogs

Fact 1: Along tail can be used to move through water by an animal. Fact 2: Thus swimming is defined as a special kind of moving, namely moving in or through water. Given the two facts above, a long tail can be used for _ by an animal?
OPTIONS:
- bullfrogs
- swimming
- growth
- flying
- courtship
- navigation
- support
- mating

Answer:
swimming