Carbon Cycle and Climate Change

Front

The graph shows us that

Back

the earth's temperature has steadily rising since the 1960s

Front

What is the best conclusion from the graph regarding atmospheric carbon dioxide levels?

Back

Atmospheric carbon dioxide levels have increased steadily since 1960.

Front

Where have some of the strongest and earliest impacts of global warming occurred? Options: in the tropics, in the northern latitudes, impacts of global warming are distributed equally all over the planet

Back

in the northern latitudes

Front

When does global CO2 go down each year?

Back

during June, July, and August

Front

What was responsible for the zig-zag fluctuation of carbon dioxide levels as the overall trend increased in the Keeling Curve?

Back

Spring / Fall variations

Answer explanation

Night/day variations do occur, but they are not visible on the Keeling Curve. CO2 levels are higher in the spring, and lower in the fall.

Tags

Climate change

Front

Which one of these does not add CO2 to the atmosphere? Options: cooking with gas, planting trees, burning wood, riding in a bus

Back

planting trees

Front

What does not produce carbon dioxide? Options: Photosynthesis, Burning Fossil Fuels, Animal respiration, Plants decaying

Back

Photosynthesis

Front

Which of the following removes carbon from the atmosphere? Options: Combustion, Respiration, Photosynthesis, Death

Back

Photosynthesis

Front

Forests are carbon sinks because they remove carbon dioxide from the atmosphere through ____________. Options: combustion, respiration, photosynthesis, decomposition.

Back

photosynthesis

Front

What are fossil fuels made from?

Back

Plants and animals that are buried underground for millions of years.