A person holding a sign during a protest against cutting down trees in a forest would be considered a(n)

A natural resource that is naturally formed much more slowly than we use it is called

Which statement about science is true?

A human-centered view of our relationship with the environment is known as

Which sphere of Earth is made of all the rock above and below Earth's surface?

The lithosphere is carried on a softer, but still firm, layer of rock called the

Which sphere are humans a part of?

A change in state in which water returns to Earth's surface and changes from a vapor to a liquid is called

Matter that organisms require for their life processes are called

Renewable resources include soil, fresh water, wild animals, and

Which of the following is an economic value of forests?

The clearing of a forest and its replacement by another land use is called

Prescribed burns are fires that

The removal of snags following a fire is called

A rock containing iron turns red as its surface is exposed to air and water over time. This is an example of

Most of the nutrients in soil come from

Deterioration of the soil’s fertility and ability to provide ecosystem services is called

Watering crops by way of human-constructed structures is known as

A rancher interested in the quality of the soil in her pasture might use which aspect of soil as a quick indicator of the pasture’s overall fertility?

The porous qualities of soil mean that which of the following can filter through the ground and pollute groundwater?

A large area of cropland seeded with one crop is a(n)

What percentage of the atmosphere is composed of oxygen?

A ratio that compares the amount of water vapor the air contains to the maximum amount that the air could hold at that temperature is

The lowest layer of Earth’s atmosphere, the one directly above the ground, is called the

Normal precipitation has a pH of about 5.6. What pH might acid precipitation have?

The air you breathe in from the atmosphere is made mostly of

How does the ozone layer benefit living things on Earth?

In which main layer of Earth’s atmosphere does most weather occur?

Radiation, conduction, and convection are the three main methods of

The pH scale is used to measure

Only a very small portion of Earth’s water is both liquid and

A hole dug into an aquifer to reach groundwater is called a

From greatest to least, rank the primary uses of fresh water around the world.

In the United States, most of the fresh water we use—about 74 percent of it—comes from

Groundwater is primarily used for

As a natural resource, freshwater is

All of the land area that supplies water to a particular river system is included in a(n)

An impermeable layer of soil and rock

Which major category of water use would include watering grain to feed to livestock?

Leaky underground storage tanks are a major source of what type of pollution?

Predator prey relationships are an example of a

What products are created by the process of photosynthesis?

Which of the following is an example of a renewable natural resource?

Which of the following is an example of a nonrenewable natural resource?

Which of the following is an example of quantitative data?

In what part of a forest would you expect to find squirrel nests?

After a catastrophe, soil formation is the first step in

Your friend tells you she’s decided not to use pesticides or synthetic chemicals on her farm; instead she’ll rely on composting and biological pest control. She is practicing

What is the source of the energy that drives air movement in the troposphere and influences weather and climate?