Problem:OPTIONS:
- earthworms
- a cuticle
- humans
- fish
- barnacles
- Most plants
- h2o
- roots

Fact 1: Annelids have the amazing capacity to regrow segments that break off. Fact 2: Annelids include earthworms and leeches. Given the two facts above, what can regrow segments that break off?
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A: earthworms

Problem:OPTIONS:
- exoskeleton
- four limbs
- communication
- nervous system
- hormones
- in the frog family
- proteins
- circulatory systems

Fact 1: Sound can be used for communication by animals. Fact 2: Animals use sound in sophisticated ways. Given the two facts above, animal what is sophisticated?
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A: communication

Problem:OPTIONS:
- humans
- Lobsters
- molecules
- pigeons
- insects
- weather
- Oak
- Mammal

Fact 1: An animal requires nutrients to grow and heal. Fact 2: Humans are a new type of animal. Given the two facts above, what requires nutrients to grow and heal?
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A: humans

Problem:OPTIONS:
- Through play
- drive more slowly
- exercise
- use a hearing aid
- quadriceps
- donate bone marrow
- sweating
- movement

Fact 1: Exercise increases a body 's strength. Fact 2: Strength training is also effective for increasing bone strength in older adults. Given the two facts above, a good way for older adults to strengthen bones is to ?
****
A:
exercise