Ecology Cycles

Which of the following is NOT true of phosphorus and the phosphorus cycle?

• Phosphorus is mined from phosphorus rich rock, which is processed and then added to commercial inorganic fertilizers as well as detergents.

• Phosphorus tends to be more localized compared with other biogeochemical cycles that can move more freely in the global system.

• Phosphorus is generally found in rocks, sediments, and soil.

• Phosphorus does not exist in the atmosphere as a gas.

• Living organisms do not need phosphorus.

Tags

NGSS.MS-ESS2-1

Both Phosphorus and Nitrogen are limiting nutrients in aquatic environments. Nitrogen tends to be limiting in marine environments while Phosphorus tends to be limiting in freshwater environments. When added to aquatic ecosystems, nitrogen and phosphorus can result in a hypoxic environment. This process is called:

• Biomagnification

• Cultural Eutrophication

• Bioaccumulation

• Upwelling

• Sedimentation

Tags

NGSS.MS-LS2-3

Which of the following is NOT a primary reservoir or sink for the element or molecule listed?

• Carbon -- Coal

• Nitrogen -- Atmosphere

• Phosphorus -- Sediments and Rock

• Sulfur - Deep Ocean Deposits

• Water -- Lakes and Rivers

The major sink for phosphorus is

• sedimentary rock

• atmospheric gases

• seawater

• plants

• animals

What is probably the principal source of nitrates and phosphates for living things?

• The water cycle

• Nitrogen fixation and lightning

• Decomposition by fungi and bacteria

• Changes in environmental temperature

• Changes in light intensity

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Which of the following elements is most likely to limit primary production in freshwater lakes?

• Oxygen

• Calcium

• Phosphorus

• Carbon

• Iron

Tags

NGSS.MS-LS1-6

Phosphorus

• is a limiting nutrient in many freshwater ecosystems.

• has an important gaseous phase

• is easily lot from soils due to leaching

• is often produced by volcanic eruptions

• changes chemical form often during its biogeochemical cycle

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

An organism that produces its own food supply from inorganic compounds is called a(an)

• heterotroph

• consumer

• detritivore

• autotroph

What is the capital of France?

• Paris

• London

• Berlin

• Madrid

Study of the interactions between organisms and the abiotic portion of the environment.

• niche

• community

• ecology

• ecosystem

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3