Unit 2 Test Review (2nd period)

When nitrogen gas is turned in to a form that plants and animals can use is called 

• Combustion

• Photosynthesis

• Decomposition

• Nitrogen Fixation

The nitrogen found in the atmosphere is not in a form that plants or animals can use.  What converts it into a usable form?

• Bacteria

• Photosynthesis

• Decomposition of organisms

• Fungi

The process where excess nutrients enter a body of water causing overgrowth of aquatic plants and algae...

• Eutrophication

• Acid Precipitation

• Nitrogen Fixation

• Decomposition

Which of the following statements is true of the phosphorus cycle?

• Phosphorus enters the atmosphere as phosphates.

• The phosphorus cycle utilizes the processes of erosion, and weathering.

• Phosphates are used in carbohydrate and glucose storage.

• The phosphorus cycle utilizes bacteria to breakdown phosphates and make them available for plants.

This is released by the weathering of rocks.

• Carbon

• Oxygen

• Phosphorus

• Nitrogen

A collection of organisms that belong to different populations but all live in the same area and interact with one another.

• Population

• Ecosystem

• Community

• Ecosphere

A collection of organisms that make up a community as well as all of the nonliving aspects of the environment.

• Population

• Community

• Habitat

• Ecosystem

The correct order of ecological organization from the smallest to the largest is _______________.

• organism, community, population, ecosystem, biosphere, biome

• biosphere, biome, ecosystem, community, population, organism

• organism, population, community, ecosystem, biome, biosphere

• population, organism, biosphere, community, ecosystem, biome

What does not produce carbon dioxide?

• Photosynthesis

• Burning Fossil Fuels

• Animal respiration

• Plants decaying

How do living organisms return carbon to the atmosphere in the carbon cycle?

• respiration and photosynthesis

•  decomposition and respiration