What have scientists discovered about Earth's atmosphere that is dramatic and alarming?

• A) A decrease in the amount of carbon dioxide

• B) An increase in the amount of oxygen

• C) An increase in the amount of carbon dioxide

• D) A stable amount of greenhouse gases

Tags

NGSS.MS-ESS3-5

What may the increase in carbon dioxide in our atmosphere cause?

• A) Improved air quality

• B) Worldwide effects on climate and oceans

• C) Decreased temperatures globally

• D) Enhanced plant growth everywhere

Tags

NGSS.MS-ESS3-5

What is the consequence of many factories burning fossil fuels?

• A) They produce renewable energy

• B) They decrease carbon emissions

• C) They release carbon into the atmosphere

• D) They have no impact on the atmosphere

Tags

NGSS.MS-ESS3-4

NGSS.MS-ESS3-5

What does the graph from the Mauna Loa Observatory show about carbon dioxide levels?

• A) A decrease in carbon dioxide levels over 60 years

• B) Fluctuating carbon dioxide levels without a clear trend

• C) A rapid increase in carbon dioxide levels over 60 years

• D) Stable carbon dioxide levels over 60 years

Tags

NGSS.HS-ESS2-6

NGSS.HS-ESS3-5

What is carbon dioxide in the atmosphere primarily increased by?

• Photosynthesis of plants

• Decomposition of organic matter

• Burning fossil fuels

• Volcanic eruptions

Tags

NGSS.HS-ESS2-6

NGSS.HS-LS2-5

Why are coal, oil, and gas called "fossil fuels"?

Tags

NGSS.MS-ESS3-1

What happens to the carbon that was in the plants and animals when they died and turned into fossil fuels?

Tags

NGSS.MS-ESS3-1

What is the consequence of burning fossil fuels according to the text?

Tags

NGSS.MS-ESS3-4

NGSS.MS-ESS3-5

What is Earth described as in the context of the carbon cycle?

• An open ecosystem

• A closed ecosystem

• A single ecosystem

• A variable ecosystem

Tags

NGSS.MS-LS1-6

What happens to the amount of carbon in Earth's system according to the text?

• It constantly increases

• It constantly decreases

• It remains constant unless human activities change it

• It fluctuates unpredictably

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3