Front

Why are trees considered natural resources?

Back

Humans use them to produce paper, lumber, fuel, and other products.

Front

Which of these is a factual statement about natural resources?

• Someday, humans will run out of fossil fuels
• Using wind energy will make us feel better about ourselves
• As soon as they're available, everyone should drive solar-powered cars
• Fuel cells are the most important technology we've ever developed

Back

Someday, humans will run out of fossil fuels

Front

Why can soil erosion be a major problem?

Back

A region's agriculture can be destroyed if the soil erodes

Front

Why isn't glass considered a natural resource?

Back

It's not found in nature

Front

What is the key difference between renewable and non-renewable resources?

Back

Non-renewable resources exist in limited quantities; renewable resources don't.

Front

What can you conclude from the fact that lots of research is being done into wind and solar energy?

Back

In the future, these technologies may be far more sophisticated and efficient

Front

Which of the following is the most sensible way to conserve natural resources?

• Stop using electricity entirely.
• Bike or walk to school instead of taking a gasoline-powered car.
• Don't use any products made from trees.
• Never ride in a car.

Back

Bike or walk to school instead of taking a gasoline-powered car.

Front

What does "sustainable" mean in the context of solar energy?

Back

Capable of being continued long-term

Front

How does recycling conserve natural resources?

Back

It allows us to re-use products instead of manufacturing new ones

Front

Why is wind energy considered a renewable resource?

Back

It's unlikely that we'll run out of wind.