How Much Is Required by the Highway Trust Fund to Maintain

question 22

Multiple Choice

How much is required by the Highway Trust Fund to maintain existing construction projects per year?

• A) Between $1 and $2 billion
• B) Between $1 and $2 million
• C) Between $5 and $7 billion
• D) Between $8 and $9 billion

---

Definitions:

UV Radiation

Ultraviolet radiation, a type of energy emitted by the sun that can cause skin damage, including sunburn and skin cancer.

Troposphere

The lowest layer of Earth's atmosphere, where weather occurs and where most atmospheric water vapor exists.

Greenhouse Gases

Gases in Earth's atmosphere, such as carbon dioxide and methane, that trap heat, leading to a warming effect known as the greenhouse effect.

Fossil Fuels

Natural fuels such as coal, oil, and natural gas, formed from the decomposed remains of plants and animals over millions of years.