Understanding Fossil Fuel Combustion (4)

What is the primary cause of human-induced climate change?

• Natural volcanic eruptions

• Greenhouse gas emissions from human activities

• Solar flares

• Ocean currents

Which of the following activities does NOT contribute to greenhouse gas emissions?

• Power generation

• Deforestation

• Photosynthesis

• Transportation

Which process is NOT involved in the carbon cycle on Earth?

• Photosynthesis

• Respiration

• Nuclear fusion

• Weathering

Which of the following is a key process that releases carbon dioxide into the atmosphere?

• Photosynthesis

• Respiration

• Water cycle

• Nitrogen fixation

What is the role of photosynthesis in the carbon cycle?

• It releases carbon dioxide into the atmosphere.

• It converts carbon dioxide into oxygen and glucose.

• It breaks down rocks to release carbon.

• It causes volcanic eruptions.

Which Earth system is directly affected by deforestation?

• Atmosphere

• Hydrosphere

• Lithosphere

• Biosphere

What is the effect of increased greenhouse gases on Earth's temperature?

• Decrease in temperature

• No change in temperature

• Increase in temperature

• Fluctuating temperature

Which of the following is a natural process that adds carbon to the atmosphere?

• Photosynthesis

• Respiration

• Weathering

• Vulcanism

Which human activity is a major contributor to methane emissions?

• Deforestation

• Rice cultivation

• Solar energy production

• Wind energy production

What is the primary greenhouse gas emitted by burning fossil fuels?

• Methane

• Nitrous oxide

• Carbon dioxide

• Water vapour