Q: Why is protein an important part of a healthy diet? ---- OPTIONS:
- It is needed to change glucose to energy.
- It is needed to store nutrients.
- It is needed to repair tissue.
- It is needed to produce water.

A: It is needed to repair tissue.

Q: The population of which of the following 26 organisms would most likely decline if small animals like rats, rabbits, and snakes were eliminated from an ecosystem? ---- OPTIONS:
- earthworms
- grasses
- hawks
- mushrooms

A: hawks

Q: How does repeating an experiment improve the likelihood of obtaining accurate results? ---- OPTIONS:
- Data can be compared.
- Time can be decreased.
- Equipment can be added.
- Procedures can be changed.

A: Data can be compared.

Q: A son can inherit traits ---- OPTIONS:
- only from his father
- only from his mother
- from both his father and his mother
- from either his father or his mother, but not from both
A: from both his father and his mother