The Earth revision quiz

What is the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen?

• Fermentation

• Decomposition

• Photosynthesis

• Respiration

What is the main source of atmospheric carbon dioxide?

• Industrial waste

• Volcanic eruptions

• Ocean currents

• Burning of fossil fuels and deforestation

How does deforestation impact the carbon cycle?

• It only impacts the carbon cycle in the oceans

• It decreases atmospheric carbon levels

• It increases atmospheric carbon levels

• It has no impact on atmospheric carbon levels

What is the role of decomposers in the carbon cycle?

• Release carbon back into the atmosphere as carbon dioxide

• Convert carbon into oxygen

• Store carbon in the soil

• Absorb carbon from the atmosphere

What is the equation for photosynthesis?

• carbon dioxide + glucose → water + oxygen

• carbon dioxide + water → oxygen + glucose

• glucose + oxygen → carbon dioxide + water

• water + oxygen → glucose + carbon dioxide

How does burning fossil fuels contribute to the increase in atmospheric carbon dioxide?

• Burning fossil fuels absorbs carbon dioxide from the atmosphere.

• Burning fossil fuels has no impact on atmospheric carbon dioxide levels.

• Burning fossil fuels reduces the amount of carbon dioxide in the atmosphere.

• Burning fossil fuels releases carbon dioxide into the atmosphere.

What are the products of respiration?

• Oxygen and glucose

• Carbon monoxide, and methane

• Carbon dioxide and water

• Nitrogen and hydrogen

How do human activities such as industrialization and transportation affect the carbon cycle?

• They increase the amount of carbon dioxide in the atmosphere

• They decrease the amount of carbon dioxide in the atmosphere

• They only affect the nitrogen cycle

• They have no impact on the carbon cycle

What is the role of the ocean in the carbon cycle?

• Causing an increase in methane production

• Releasing carbon dioxide into the atmosphere

• Having no impact on the carbon cycle

• Absorbing and storing carbon dioxide from the atmosphere

What are some ways to reduce human impact on the carbon cycle?

• Use more energy

• Cut down more trees

• Increase fossil fuel consumption

• Decrease fossil fuel use