Carbon Cycle 1

Respiration is the process by which animals take in _____ and release _____. 

• photosynthesis, air
• carbon, oxygen
• oxygen
• oxygen, carbon dioxide

Deforestation contributes to the greenhouse gasses by

• loss of trees that would otherwise remove carbon dioxide from the air
• as trees are cut, they release carbon dioxide
• increasing the amount of oxygen in the air

This reservoir of carbon is the air and gasses that surround the Earth.

• Atmosphere

• Biosphere

• Hydrosphere

• Lithosphere

Bacterias that decompose dead plants release _____________ back into the atmosphere and into the soil.

• water

• nitrogen

• oxygen

• carbon

Tags

NGSS.MS-LS2-3

If there's 20,000 kcal on the producer level of this trophic pyramid, how many kcal will be passed on to the primary consumers?

Mathematical Equivalence

ON

Tags

NGSS.MS-LS2-3

Which one of these does not add CO2 to the atmosphere?

• cooking with gas
• planting trees
• burning wood
• riding in a bus

Which of the following removes carbon from the atmosphere?

• Combustion
• Respiration
• Photosynthesis
• Death

Tags

NGSS.MS-LS1-6

Humans burn fossil fuels and wood, releasing carbon dioxide into the atmosphere. This carbon dioxide is then absorbed by trees for photosynthesis. These processes are contributory to which chemical cycle?

• The carbon cycle

• The water cycle

• The nitrogen cycle

• The phosphorous cycle

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following is an example of human impact on the carbon cycle?

• The increased production of methane gases from cattle farms

• The burning of fossil fuels

• The cutting down of trees for lumber

• Driving automobiles

• All of the above

The average temperature of the surface of Earth has increased approximately 1°C in the past century. Which reason best explains this increase in temperature?

• lower levels of ozone in the atmosphere
• lower levels of nitrogen in the atmosphere
• higher levels of carbon dioxide and other greenhouse gases in the atmosphere
• higher levels of oxygen in the atmosphere

Tags

NGSS.MS-ESS3-5