IB ESS

When deciduous trees shed their leaves, specialized soil bacterial will consume the leaf material for energy and, in the process, will return some of the leaf nitrogen to the soil. What nitrogen cycle process is taking place?

• nitrogen fixation

• nitrification

• denitrification

• ammonification

• assimilation

Tags

NGSS.MS-LS2-3

What is the main human activity that disrupts the nitrogen cycle?

• Use of synthetic fertilizers

• Combustion of fossil fuels

• Photosynthesis

• Ocean acidification

What is the primary purpose of biogeochemical cycles?

• To store energy in ecosystems

• To ensure chemical elements remain available to living organisms

• To remove carbon dioxide from the atmosphere

• To increase biodiversity

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following is a key component of biogeochemical cycles?

• Sinks, stores, and sources

• Only living organisms

• Only the atmosphere

• Only the hydrosphere

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

NGSS.MS-LS2-3

What is a carbon sink?

• A place where carbon is released into the atmosphere

• A place where carbon is absorbed and stored

• A place where carbon is permanently removed

• A place where carbon is converted into nitrogen

Tags

NGSS.MS-LS1-6

Which of the following is an example of an organic carbon store?

• Crude oil

• The atmosphere

• Soil carbonates

• Ocean water

Tags

NGSS.HS-ESS2-6

Which of the following is an inorganic store of carbon?

• Fossil fuels

• Living organisms

• Carbon dioxide in the atmosphere

• Plant biomass

How does carbon move from plants to animals in the carbon cycle?

• Photosynthesis

• Feeding

• Cellular respiration

• Decomposition

Tags

NGSS.MS-LS2-3

What process releases carbon dioxide back into the atmosphere from both plants and animals?

• Photosynthesis

• Cellular respiration

• Carbon sequestration

• Carbon fixation

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

What is carbon sequestration?

• The release of carbon dioxide into the atmosphere

• The process of capturing and storing carbon dioxide

• The process of converting carbon into fossil fuels

• The process of burning carbon for energy

Tags

NGSS.HS-ESS2-6

NGSS.HS-LS2-5