El ciclo del carbono

The video explains the carbon cycle, highlighting carbon's presence in the atmosphere, oceans, and rocks. It details how carbon is exchanged between living organisms and the atmosphere through processes like photosynthesis and respiration. The role of decomposition and fossil fuels in releasing carbon is discussed, along with similar processes in marine environments. The video concludes by addressing the impact of human activities, such as burning fossil fuels and deforestation, on the carbon cycle and the planet.

What is the primary form of carbon in the atmosphere?

• Ozone

• Carbon dioxide

• Carbon monoxide

• Methane

How do animals contribute to the carbon cycle?

• By absorbing carbon dioxide

• By consuming plants and releasing carbon dioxide

• By producing oxygen

• By decomposing rocks

What happens to carbon when plants and animals decompose?

• It is absorbed by the atmosphere

• It becomes part of the soil

• It turns into fossil fuels

• It is released as carbon dioxide

How does carbon dioxide enter ocean waters?

• Through photosynthesis

• By dissolving in cold waters

• By marine animal respiration

• Through volcanic activity

What is a major consequence of deforestation on the carbon cycle?

• Increased oxygen levels

• Decreased carbon dioxide levels

• Disruption of carbon absorption

• Enhanced fossil fuel formation