Links Between Water and Carbon Cycles

What is the most fundamental similarity between the water and carbon cycles?

• Both cycles are driven by human activity.

• Both water and carbon are essential building blocks for life on Earth.

• Both cycles are open systems at a global scale.

• Both cycles are primarily stored in the cryosphere.

Which of the following is a shared store for both the water and carbon cycles?

• The stratosphere

• The lithosphere

• The mesosphere

• The exosphere

How do the water and carbon cycles experience changes over time?

• They remain static and unchanging.

• They experience changes only due to human activity.

• They experience temporal changes, such as seasonal variations.

• They only change spatially, not temporally.

Which process in the carbon cycle cannot occur without water?

• Combustion

• Photosynthesis

• Decomposition

• Fossilisation

What is the effect of water vapour as a greenhouse gas on the carbon cycle?

• It decreases the amount of carbon dioxide in the atmosphere.

• It has no effect on the carbon cycle.

• It increases the greenhouse effect, impacting the carbon cycle.

• It causes the carbon cycle to stop.

Which human activity is mentioned as having a significant impact on both the water and carbon cycles?

• Urbanisation

• Mining

• Deforestation

• Fishing

What is the primary characteristic of positive feedback in environmental systems?

• It diminishes changes within a system.

• It amplifies changes within a system.

• It has no effect on changes within a system.

• It reverses changes within a system.

Which of the following is an example of positive feedback in the carbon cycle?

• Increased photosynthesis due to higher temperatures

• Melting of permafrost releasing more greenhouse gases

• Increased cloud cover reflecting sunlight

• Decreased evaporation rates

What is the effect of increased ocean temperatures on carbon dioxide levels?

• It decreases carbon dioxide levels in the atmosphere.

• It has no effect on carbon dioxide levels.

• It increases carbon dioxide levels in the atmosphere.

• It causes carbon dioxide to dissolve more in the ocean.

What is the role of sea ice in the Earth's climate system?

• It absorbs sunlight, increasing temperatures.

• It reflects sunlight, helping to cool the Earth.

• It has no effect on the Earth's climate.

• It releases carbon dioxide when it melts.