Carbon Flux & Human Impact (New Flashcards)

Front

What is the primary reason for the increase in atmospheric CO2 levels over the past 100 years?

Back

Human activities such as burning fossil fuels and deforestation

Front

Which sphere has the largest carbon storage? Options: Atmosphere, Biosphere, Hydrosphere, Lithosphere

Back

Lithosphere

Front

How much carbon is exchanged annually between the atmosphere and the hydrosphere?

Back

90 GT

Front

During which historical period did human activity begin significantly increasing atmospheric CO2 levels?

Back

The Industrial Revolution

Front

What is the current annual contribution of carbon to the atmosphere from fossil fuel burning?

Back

10 GT

Front

Which human activity contributes 2–4 gigatons of carbon per year to the atmosphere?

Back

Deforestation and agriculture

Front

What is the main reason that atmospheric CO2 levels continue to rise?

Back

Lack of processes returning CO2 to other spheres

Front

Which two spheres exchange the greatest amount of carbon annually?

Back

Biosphere and atmosphere

Front

How has human population growth affected carbon fluxes?

Back

Increased carbon emissions

Front

What is the effect of deforestation on atmospheric carbon levels?

Back

Increases atmospheric carbon