When taken to a new habitat, non-native plants often threaten the native plants of the new habitat. How do they do this?

These were released in Australia to eat cane beetles, but now they are an invasive species and number in the millions.

According to most scientists, what is the ultimate cause of most mass extinctions?

The most important reason for decrease in biodiversity is

A biodiversity hotspot is

What classifies a species as endangered?

The breaking of habitats into smaller pieces is called...

Which of the following areas of the United States are considered biodiversity hotspots?

Which place are kangaroos considered to be endemic?

Which of the following species is extinct?

A large region characterized by a specific type of climate and certain types of plant and animal communities.

The height of an object above a reference point, such as sea level or the Earth's surface.

The distance north or south from the equator; expressed in degrees.

The average weather conditions in an area over a long period of time.

In arctic regions, the permanently frozen layer of soil or sub soil is called.

Water above the surface of the land, including lakes, rivers, streams, ponds, floodwater, and runoff.

As streams and rivers move across the land, they form a flowing network of water called a/an

the area of land that is drained by a river system

groundwater water that fills the cracks and spaces in underground soil and rock layers

Water that fills the cracks and spaces in underground soil and rock layers is called a/an

A body of rock or sediment that stores groundwater and allows the flow of groundwater is a /an?

The amount of open space between rock particles.

The ability of rock or soil to allow water to flow through it

Area of the Earth's surface where water percolates down into the aquifer

Means suitable for drinking

Any disease-producing agent (especially a virus or bacterium or other microorganism)

The process of SUPPLYING WATER to areas of land to make them suitable for GROWING CROPS

A structure that holds back and controls the flow of water in a river or other body of water

A large natural or artificial lake created by a dam that is used as a source of water supply.

The process of removing salts or other minerals and contaminants from seawater, brackish water, or wastewater effluent that it is an increasingly common solution to obtain fresh water for human consumption and for domestic/industrial utilization.

In which country is the population likely to be increasing most rapidly?

Using scientific information from chemistry and biology to devise a plan to clean up a lake and make it healthy again describes

Which country is most likely to have either a stabilized or a slowly growing population?

Air pollution causes all of the following, except

Natural causes of air pollution include all of the following

A radioactive gas that can build up in homes.

Exposure to too much radon gas can cause

Radon is usually found in this location in your home.

How do humans cause air pollution?

What is the main cause of air pollution?

Climate change caused by extra carbon dioxide in the air that causes heat to get trapped in the atmosphere is called

Gases released from power plants mix with water vapor in the sky to make ________________.

A mixture of smoke, fog and chemicals in the air is known as ________.

What are ways that we can decrease air pollution?

What is the largest cause of land pollution?

True or False:

The USA used to send much of their recycling to China where Chinese companies would recycle it. Now the Chinese government has stopped accepting recycling, which causes a lot of recyclable products to not be recycled, and instead end up in landfills.

Crop rotation is used by organic farmers to preserve the qualities of the soil?

The largest watershed in the United States is the

What pollutant forms with automobile emissions react with oxygen gas and ultraviolet rays?

Which of the following pH measurements of rainwater would indicate acid precipitation?

During summer in the Southern Hemisphere, the Northern Hemisphere experiences

___% of energy is passed on to the next level in the food chain/pyramid?

What is the definition of renewable energy sources?

What are examples of non-renewable energy sources?

Living vegetation and the ocean are known as "carbon sinks" because

When the death rate rises and the birth rate lowers...