Geochemical Cycles

What is the process by which nitrogen gas is converted into ammonia?

• Nitrification

• Denitrification

• Nitrogen fixation

• Ammonification

Which organisms are primarily responsible for nitrogen fixation?

• Fungi

• Bacteria

• Plants

• Animals

What is the process of converting ammonia into nitrate called?

• Nitrogen fixation

• Ammonification

• Nitrification

• Denitrification

Denitrification converts nitrates into which of the following?

• Nitrites

• Ammonia

• Nitrogen gas

• Nitric acid

In the nitrogen cycle, which process returns nitrogen to the atmosphere?

• Nitrification

• Denitrification

• Assimilation

• Ammonification

Tags

NGSS.MS-LS2-3

What happens during condensation in the water cycle?

• Water vapor forms clouds

• Water vapor rises into the air

• Water falls as precipitation

• Water flows into rivers and streams

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

Which of the following is NOT a part of the water cycle?

• Sublimation

• Photosynthesis

• Evaporation

• Infiltration

Tags

NGSS.MS-ESS2-4

Which process is directly responsible for cloud formation?

• Evaporation

• Condensation

• Precipitation

• Transpiration

Tags

NGSS.MS-ESS2-4

Which process is the primary way carbon is returned to the atmosphere from living organisms?

• Photosynthesis

• Combustion

What role do plants play in the carbon cycle?

• Release carbon dioxide through respiration

• Convert carbon dioxide into organic matter through photosynthesis

• Store carbon in the soil

• Release carbon through combustion

Tags

NGSS.MS-LS1-6