Consumers that eat both plants and animals are called

In which process do producers use carbon from carbon dioxide to produce other carbon-containing molecules?

An organism that can make its own food is called a

According to this diagram, plants use nitrogen to make _________________________

What converts nitrogen gas (N2) into a usable form for plants and animals?

The step in the water cycle in which water vapor becomes liquid water is

he first organism in a food chain is always a

What area(s) are NOT part of any major biome?

What is it called when plants give off water vapor as a waste product?

If a kestrel eats a mouse that eats grass, the kestrel is a

Vultures, which feed on the bodies of dead organisms, are

The ocean water is completely dark throughout the

Ponds and rivers are two types of

Which biome receives less than 25 centimeters of rain per year?

What do producers release as a result of photosynthesis?

Which ecosystem is found where the freshwater of a river meets the salt water of the ocean?

Which of these consumers is a herbivore?

In an energy pyramid, which level has the most available energy?

Which describes the relationship between plants and animals in the carbon cycle?

In which process do molecules of liquid water absorb energy and change into the gas state?

The many overlapping food chains in an ecosystem make up a(n)

The ocean prevents the Australian kangaroo from dispersing throughout the world. The ocean is an example of which limit to dispersal?

After plants and animals contain nitrogen, what puts it back into atmosphere and soil?

A diagram that shows the amount of energy that moves from one feeding level to another in a food web is called a(n)

Which of these is NOT an example of precipitation?

The living parts of an ecosystem are called

If you count 20 beetles in a garden measuring 5 square meters, the population density of the beatles is

An organism’s habitat must provide all of the following EXCEPT

Which of the following is a biotic factor in the prairie ecosystem?

The place where an organism lives and that provides the things the organism needs is called its

The study of how things interact with each other and with their environment is called

The first species to populate an area where primary succession is taking place are called

The struggle between organisms to survive in a habitat with limited resources is called

A close relationship between two species that benefits at least one of the species is called

A hawk building its nest on an arm of a saguaro cactus is an example of

An early winter frost preventing further growth in a tomato garden is an example of

A group of antelope leaving the herd in search of better grassland is an example of

Counting the number of organisms in a small area and multiplying to estimate the number in a larger area is called

An organism’s particular role in its habitat, or how it makes its living, is called its

Which of the following is an example of a population?

Population density is defined as

The largest population that an environment can support is called its

All the different populations that live together in an area make up a(n)

The smallest unit of ecological organization is a single

The behaviors and physical characteristics of species that allow them to live successfully in their environment are called

When a jellyfish paralyzes a tiny fish with its poisonous tentacles, the fish is the

Which of the following describes an interaction in which one organism kills and eats another?

The series of changes that occurs after a disturbance in an existing ecosystem is called

The study of natural processes in the environment and how humans can affect them is called

Which of the following is considered a renewable resource?

Which of the following is considered a renewable resource?

Which of the following would be a cost of drilling for oil in Antarctica?

Which of the following might be a benefit of building an incinerator in a town?

Which of the following is considered a nonrenewable resource?

Which of the following is an example of a global environmental choice?