Environmental Cycles Quiz

Which of the following cycles involves the continuous movement of water between the Earth's surface and the atmosphere?

• Water cycle

• Nitrogen cycle

• Carbon cycle

• Phosphorus cycle

In the carbon cycle, which process involves the conversion of carbon dioxide (CO2) into organic compounds by green plants?

• Combustion

• Photosynthesis

• Respiration

• Decomposition

What is the primary source of phosphorus in the phosphorus cycle?

• Weathering of rocks

• Biological decomposition

• Atmospheric deposition

• Volcanic activity

Which cycle involves the movement of sulfur between the atmosphere, lithosphere, hydrosphere, and biosphere?

• Nitrogen cycle

• Carbon cycle

• Sulfur cycle

• Phosphorus cycle

What is the main process responsible for returning nitrogen gas (N2) to the atmosphere in the nitrogen cycle?

• Assimilation

• Denitrification

• Nitrification

• Nitrogen fixation

Which cycle involves the conversion of atmospheric nitrogen gas (N2) into ammonia (NH3) by certain bacteria?

• Nitrogen cycle

• Sulfur cycle

• Carbon cycle

• Phosphorus cycle

What process involves the transformation of ammonia (NH3) into nitrate (NO3-) by nitrifying bacteria in the soil?

• Assimilation

• Nitrification

• Nitrogen fixation

• Denitrification

In the water cycle, what process involves the release of water vapor into the atmosphere from plants' leaves?

• Evaporation

• Condensation

• Transpiration

• Precipitation

Which cycle plays a crucial role in regulating Earth's climate and temperature?

• Nitrogen cycle

• Water cycle

• Phosphorus cycle

• Carbon cycle

Human activities such as burning fossil fuels primarily affect which environmental cycle?

• Sulfur cycle

• Nitrogen cycle

• Carbon cycle

• Phosphorus cycle