5.25 Unit Test: Ecology and the environment

Which of the following is the BEST definition of an ecosystem?

An ecosystem is a community and its surrounding nonliving environment

Which of the following is the biggest reservoir of nitrogen?

Atmosphere

What do you call a large geographic area that is dominated by specific types of plants and animals that has a distinct climate?

Biome

Organisms use Nitrogen in which of the following ways?

Certain bacteria living in the roots of plants convert nitrogen to a form plants can use, and animals obtain their nitrogen by eating those plants.

Which type of organisms recycle the organic molecules of dead organisms at all trophic levels and return their nutrients to the environment?

Decomposers

Which graph BEST shows a population that grew exponentially until its carrying capacity was met?

Graph C

You are an ecologist studying a newly discovered animal. You find that it reproduces slowly and has only a few offspring each time it reproduces. What type of organism is?

K strategist

What biome covers the biggest region of earth?

Marine

Study the photographs below. Assume that all of the topsoil in the area was buried under ash after a volcanic eruption. Which process does this series of photographs best represent?

Primary Succession

Which trophic level contains the organisms that are the source of chemical energy used in an ecosystem?

Producers

Study the photograph below. Assuming this land was once a farmer's field, which process does this photograph best represent?

Secondary Succession

Referring to the above question: Which organisms would you expect to find in this biome? Sedge, arctic hares, and arctic foxes

Sedge, arctic hares, and arctic foxes

Biodiversity is BEST described by which of the following?

The total number of different species in that area

The water cycle is best described by which of the following statements?

The water on earth changes form as it moves from one reservoir to another

What biome is photographed here? -lake, grass, mountains-

Tundra

If you want to see the original creator of this set, click this link. All i did was correct it, even though she still did a good job :)

https://quizlet.com/199861456/525-unit-test-ecology-and-the-environment-flash-cards/