Ecology Nitrogen

What is the chemical equation for nitrate?

• NH3

• N2

• NO2

• NO3

Tags

NGSS.MS-PS1-1

Organisms that need nitrogen to survive.

• only plants

• only animals

• only bacteria

• all living things

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NGSS.MS-LS2-1

NGSS.MS-LS2-3

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What is the main reservoir of nitrogen?

• Water bodies

• Plants

• Atmosphere

• Soil

How do animals get the nitrogen they need?

• From the air they breathe

• From the water they drink

• From the food they eat

• From the sun

Tags

NGSS.MS-LS2-3

Organisms require nitrogen to make which of the following?

• glucose and starch
• lipids and nucleic acids
• proteins and nucleic acids
• carbohydrates and proteins

Tags

NGSS.HS-LS1-6

Process where excess nutrients enter body of water causing overgrowth of aquatic plants and algae...

• Eutrophication
• Acid Precipitation
• Nitrogen Fixation
• Decomposition

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NGSS.MS-LS1-5

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How much of the atmosphere is composed of oxygen?

• 87%

• 38%

• 78%

• 21%

What can excess amounts of nitrogen cause in ecosystems? 

• Disrupts the equilibrium of ecosystem, causing number of species to decline
• Leads to improvement of an ecosystem due to healthy plant growth
• Leads to high oxygen content in aquatic ecosystems
• Increases the speed of decomposition of plants and animals 

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Some plants contain nitrogen in their _________.

• Leaves

• Steam

• Flower

• Roots

Tags

NGSS.MS-LS2-1

Majority of nitrogen fixation occurs by

• Biological nitrogen fixing organisms

• Lightning

• volcanic eruptions

• Haber–Bosch process

Tags

NGSS.MS-LS2-3