Human Impact on Climate Review

Front

What is the carbon cycle?

Back

The carbon cycle is the process by which carbon is exchanged among the atmosphere, land, water, and living organisms. It involves processes like photosynthesis, respiration, and decomposition.

Front

How do living organisms return carbon to the atmosphere?

Back

Living organisms return carbon to the atmosphere primarily through respiration and decomposition.

Front

What happens when humans burn fossil fuels?

Back

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

Front

What has caused the average temperature of Earth to increase by approximately 1°C in the past century?

Back

The increase in average temperature is primarily due to higher levels of carbon dioxide in the atmosphere.

Front

What trend has been observed in atmospheric carbon dioxide levels since 1960?

Back

Atmospheric carbon dioxide levels have increased steadily since 1960.

Front

Which natural process removes carbon dioxide from the atmosphere?

Back

Photosynthesis is the natural process that removes carbon dioxide from the atmosphere.

Front

What is respiration in the context of the carbon cycle?

Back

Respiration is the process by which living organisms convert oxygen and glucose into energy, releasing carbon dioxide back into the atmosphere.

Front

What role do forests play in the carbon cycle?

Back

Forests play a crucial role in the carbon cycle by absorbing carbon dioxide during photosynthesis and storing carbon in biomass.

Front

What is decomposition?

Back

Decomposition is the process by which dead organic matter is broken down by microorganisms, returning carbon to the atmosphere as carbon dioxide.

Front

What is the greenhouse effect?

Back

The greenhouse effect is the warming of Earth's surface due to the trapping of heat by greenhouse gases like carbon dioxide in the atmosphere.