Q: Answer the question

In a large forest with many animals, there are only a small number of bears. Which of these most likely limits the population of bears in the forest?
OPTIONS:
- supply of food
- type of tree
- predation by carnivores
- amount of suitable shelter

A: supply of food

Q: Answer the question

The human body has an average, normal temperature of about 98.6F. To keep the core body temperature from becoming too high, the brain sends a signal to the body to
OPTIONS:
- decrease sugar levels in the blood.
- increase sugar levels in the blood.
- decrease blood flow to the skin.
- increase blood flow to the skin.

A: increase blood flow to the skin.

Q: Answer the question

All natural resources on Earth are either renewable or nonrenewable. Whether a resource is renewable or nonrenewable depends on how fast or slow the resource is replaced. If the resource is used faster than it is replaced, then the resource will, in time, disappear. Which statement describes the use of a renewable natural resource?
OPTIONS:
- A home burns natural gas for heat.
- A city burns coal to generate electricity.
- A farmer plants different types of crops to protect the soil.
- A construction crew builds a road from rock, sand, and gravel.

A:
A farmer plants different types of crops to protect the soil.