The Carbon Cycle Journey Through Nature's Systems

The video explains the carbon cycle, starting with carbon in the atmosphere as CO2, which plants use for photosynthesis. It describes how carbon moves through ecosystems via trophic levels and is present in all living things. The cycle includes geological processes where organic material decays into fossil fuels, which release CO2 when burned. The cycle is continuous, involving both abiotic and biotic components, and the ocean plays a crucial role in photosynthesis and respiration.

What is the initial form of carbon in the atmosphere?

• Methane

• Carbon monoxide

• Ozone

• Carbon dioxide

How do plants utilize carbon dioxide?

• To produce glucose

• For respiration

• To absorb sunlight

• To release oxygen

What happens to carbon when consumers eat plants?

• It moves through trophic levels

• It turns into methane

• It becomes fossil fuel

• It is released as oxygen

Which environments are part of the carbon cycle?

• Only the atmosphere

• Only the ocean

• Ocean, air, and rock

• Only living organisms

What process turns organic material into fossil fuels?

• Evaporation

• Decay and pressure

• Combustion

• Photosynthesis

What is released when fossil fuels are burned?

• Nitrogen

• Oxygen

• Carbon dioxide

• Hydrogen

How does the carbon cycle continue over time?

• It stops after a few years

• It repeats indefinitely

• It only occurs in the atmosphere

• It only occurs in the ocean

What role does the ocean play in the carbon cycle?

• It only releases carbon

• It stores carbon permanently

• It has no role

• Photosynthesis and respiration occur

Which process in the ocean contributes to the carbon cycle?

• Evaporation

• Photosynthesis

• Condensation

• Precipitation

How does carbon return to the atmosphere from the ocean?

• Through cellular respiration

• Through photosynthesis

• Through evaporation

• Through precipitation