Carbon Cycle and Carbon Sink

When humans burn fossil fuels, most of the carbon enters the .................... as carbon dioxide.

• water

• atmosphere

• plants

• decomposers

Which one of these does not add carbon dioxide to the atmosphere?

• cooking with gas

• burning wood

• riding in a bus

• planting trees

Tags

NGSS.MS-LS1-6

How do living organisms return carbon to the atmosphere in the carbon cycle?

• respiration and photosynthesis

• decomposition and feeding

• combustion and feeding

• decomposition and respiration

How does the carbon in grass become part of a lion?

• Starch in plants is directly ingested and digested by the lion.

• Carbon in Carbon dioxide given out from plant respiration enters the lion's lungs.

• Carbon enters the lion through the food chain.

• Burning of plants release carbon dioxide which enters the lion.

Tags

NGSS.MS-LS2-3

Which of the following cannot be recycled?

• water

• carbon

• nitrogen

• energy

Tags

NGSS.MS-LS2-3

What is a carbon sink?

• An area that only stores carbon for a long period of time.

• An area that stores more carbon than it releases over a long period of time.

• An area that temporarily stores a lot of carbon.

• An area that releases more carbon than it stores over a long period of time.

Tags

NGSS.HS-ESS2-6

NGSS.HS-LS2-5

What are the two main natural carbon sinks?

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS1-6

Which organisms in the ocean absorb the most carbon dioxide?

• phytoplankton

• fish

• corals

• algae

Tags

NGSS.MS-LS1-6

Ocean coral and oysters use carbon to create.............

• oxygen

• leaves

• shells

• food

Organisms that die in the ocean may ......................................... and form limestone rock over a period of time.

• sink to the bottom

• float to the top

• release carbon dioxide

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS2-3