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 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?

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

What term describes a social movement dedicated to protecting the natural world from undesirable changes brought about by human actions?

Which steps are usually near the beginning of a scientific investigation?

A set of moral principles or values held by a person or a society is called

Which of the following gives value to all living things, both human and nonhuman?

Tigers living in warm climates have thinner coats of fur than tigers living in cool climates. This is a result of

The easiest component of biodiversity to measure is

The Sikhote-Alin Mountains, and the Siberian tigers living on them, are separated from other mountain regions in which the tigers could live. The mountains are an example of a(n)

To manage, protect, and reintroduce threatened and endangered species are the goals of

A region that includes tigers, eagles, lizards, fish, rabbits, and many other types of organisms would be described as having a high level of

Which is the highest level of biodiversity?

Which type of organism dwarfs all others in terms of species diversity?

High levels of biodiversity tend to

The disappearance of a particular population from a given area, but not of the entire species globally, is called

A species that is at serious risk of extinction is called

By far, the biggest cause of biodiversity loss today is

There is a plan to establish an 8000-kilometer-long strip of land across eight southeast Asian countries to rejoin fragments of tiger habitat. This is an example of a

Predator prey relationships are an example of a

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

What products are created by the process of photosynthesis?

Water molecules are composed of

The thin layer of rock that forms Earth’s outer skin both on dry land and in the ocean is called Earth’s

Which of Earth’s spheres consists of the layers of gases surrounding our planet?

Water which returns from the atmosphere to Earth’s surface as rain or snow is called

Nutrients circulate endlessly throughout the environment in complex cycles called

What is the term for organisms, including plants and algae, that create their own food?

In extreme cases, eutrophication can lead to extremely low levels of oxygen in a body of water as decomposers break down all the dead producers, a condition 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

Some tree plantations resemble a natural forest that

The removal of snags following a fire is called

A renewable resource is harvested sustainably if

Most of Earth’s fresh water is used for

One disadvantage of the selection system of timber harvesting is that it

Deforestation is particularly harmful in arid regions because it can lead to

Which type of forest most likely contains the greatest variety of habitats?

If a wood product is certified by the Forest Stewardship Council, it was produced

What event in the mid-1700s significantly changed human population growth?

Which combination of factors will produce the highest rate of population growth?

What happens during the transitional stage of the demographic transition?

In which of the following countries would individuals have the largest ecological footprints?

In recent years, the human population has

The average number of years an individual is predicted to live is called

The number of organisms that an environment can support is called the

Which area would have the lowest population density?

The amount of people living in a given area is described as population

What can be inferred about an area that has an age structure diagram with a pyramid shape?

The number of males compared to females in a population is the

The model used to explain the reason that some industrialized nations have experienced a large change in birthrates and death rates is called the

After a catastrophe, soil formation is the first step in

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

A farmer interested in raising healthy crops should look for a

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

As a farmer, you would be most concerned with the quality of the soil in the

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?

In a region with strong winds, flat land, and little natural forest cover, what would you recommend in order to reduce erosion?

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

Carbon-containing fuels, or fossil fuels, formed millions of years ago from the remains of

How does carbon monoxide affect human health?

A(n) _____ can trap smog close to the surface. It happens when a layer of cool, dense air stays near the ground and under a layer of warm air.

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

Pollutants are removed or changed chemically before they leave factory smokestacks by a(n)

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

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

How does carbon monoxide interfere with your body’s ability to deliver oxygen to cells?

The pH scale is used to measure

A device in a motor vehicle that reduces the amount of air pollutants in emissions is a(n)

What are the two primary methods of waste recovery?

Discarded electronic devices are considered hazardous waste because they

Which of the following is a source of high-level radioactive waste?

In what category of waste do paint, household cleaners, medical waste, and solvents belong?

Today, waste is buried in the ground or piled up in large, carefully engineered mounds called

Items that are biodegradable will

The collection of materials that can be broken down and reprocessed to make new items is

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.

The best way to reduce groundwater pollution is to

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

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

Overirrigation can result in

Which of the following is an example of nonpoint-source pollution?

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