Carbon Cycle

What is combustion?

• A process of freezing substances in the presence of nitrogen.

• A chemical reaction that involves the burning of substances, typically in the presence of oxygen, resulting in the release of energy, carbon dioxide, and water.

• A method of purifying water through evaporation.

• A reaction that absorbs energy and produces heat.

What gas do humans depend on for survival?

• Carbon Dioxide

• Nitrogen

• Oxygen

• Hydrogen

What is the significance of decomposition in the carbon cycle?

• Decomposition helps in the formation of fossil fuels.

• Decomposition is the process by which dead organic matter is broken down by decomposers, returning carbon to the soil and atmosphere, thus continuing the carbon cycle.

• Decomposition prevents the release of carbon into the atmosphere.

• Decomposition is the process of photosynthesis in plants.

Why is the carbon cycle important?

• It helps in the formation of fossil fuels.

• It is essential for maintaining the balance of carbon in the environment, supporting life, and regulating the Earth's climate.

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

• It has no significant impact on the environment.

What do plants depend on for photosynthesis?

• Oxygen, sunlight, and minerals

• Carbon dioxide, sunlight, and water

• Nitrogen, heat, and soil

• Hydrogen, sunlight, and air

What role do plants play in the carbon cycle?

• Plants absorb carbon dioxide from the atmosphere during photosynthesis and release oxygen, thus regulating atmospheric carbon levels.

• Plants release carbon dioxide into the atmosphere during photosynthesis.

• Plants do not play any significant role in the carbon cycle.

• Plants only absorb oxygen from the atmosphere.

What is a carbon sink?

• A natural or artificial reservoir that absorbs and stores carbon from the atmosphere, such as forests, oceans, and soil.

• A process that releases carbon dioxide into the atmosphere.

• A type of plant that grows in carbon-rich environments.

• A method of measuring carbon emissions in urban areas.

What is respiration in the context of the carbon cycle?

• The process by which plants absorb carbon dioxide and release oxygen.

• The process by which living organisms consume oxygen and release carbon dioxide as a byproduct.

• The process of photosynthesis in plants.

• The process of converting carbon dioxide into glucose.

What is photosynthesis?

• Photosynthesis is the process by which green plants use sunlight to convert carbon dioxide and water into glucose and oxygen.

• Photosynthesis is the process by which animals convert food into energy.

• Photosynthesis is the method by which plants absorb nutrients from the soil.

• Photosynthesis is the way in which plants reproduce through seeds.

What is the carbon cycle?

• The process by which carbon is exchanged between the atmosphere, land, water, and living organisms.

• A method of carbon capture and storage in geological formations.

• The cycle of carbon emissions from industrial activities.

• A natural process that only occurs in forests.