Nutrient Cycle Review

One of the nutrient cycles moves from an atmospheric gaseous form to the soil through both abiotic and biotic processes, moves through the food web, then is returned to the soil or to the atmosphere. Which cycle fits this description?

• Nitrogen

• Carbon

• Phosphorus

• Water

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-3

Which biogeochemical cycle is least dependent on biotic processes?

• Nitrogen

• Carbon

• Phosphorus

• Water

• Oxygen

Tags

NGSS.MS-ESS2-4

Which of the following nutrients has only a short-term biogeochemical cycle?

• Nitrogen

• Carbon

• Phosphorus

• Water

• Oxygen

What organism is responsible for nitrogen fixation?

• plants

• humans

• bacteria

• viruses

• mice

Tags

NGSS.MS-LS2-3

Type of bacteria that will put Nitrogen back into the soil or transform it into a usable form.

• Weathering

• Run-Off

• Combustion

• Nitrogen-fixing

• Precipitation

Types of organisms that serve to break down inorganic waste and deposit into the soil.

• Diffusion

• Decomposers

• Detrivores

• Fossil fuels

• Denitrification

Tags

NGSS.MS-LS2-3

Process by which nitrogen is extracted from the soil.

• Diffusion

• Decomposers

• Detrivores

• Fossil fuels

• Denitrification

Label the steps in the Nitrogen Cycle

a

b

c

d

e

Ammonification

Nitrification

Denitrification

Assimilation

Nitrogen Fixation

Tags

NGSS.MS-LS2-3

Label the processes shown in the phosphorus cycle.

a

b

c

d

Consumption

Assimilation

Decompositoin

Weathering

Tags

NGSS.MS-LS2-3

Phosphorus runoff in the water supply can lead to _____________.

• phosphorus poisoning of land mammals

• deformed fish species

• overgrowth of algae, resulting in loss of other aquatic species

• Who knows?  Not Me.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5