Nitrogen Cycle
Carbon Cycle
Water Cycle
Phosphorus Cycle
Transfer of Matter
100

What is the process by which nitrogen gas in the atmosphere is converted into a form that plants can use?

What is nitrogen fixation?

100

What process do plants use to take in carbon dioxide from the atmosphere?

What is photosynthesis?

100

What is the term for water turning into vapor and rising into the atmosphere?

What is evaporation?

100

Where is phosphorus primarily found in nature?

What are rocks and minerals?

100

What does the term "transfer of matter" mean in the context of biogeochemical cycles?

What is the movement of essential elements and compounds through different parts of the ecosystem?

200

Name the organisms that play a key role in converting atmospheric nitrogen into usable forms for plants.

What are nitrogen-fixing bacteria?

200

How does carbon dioxide return to the atmosphere from animals?

What is respiration?

200

What do we call the process when water vapor cools and forms clouds?

What is condensation?

200

How do plants obtain phosphorus?

What is by absorbing it from the soil?

200

How does matter differ from energy in ecosystems?

What is matter is recycled while energy flows in one direction?

300

What is the term for the process where plants absorb nitrogen through their roots?

What is assimilation?

300

What are fossil fuels, and how do they relate to the carbon cycle?

What are carbon-rich materials formed from ancient organisms that release carbon when burned?

300

What is precipitation?

What is water falling back to Earth in forms like rain, snow, or sleet?

300

What is the role of decomposers in the phosphorus cycle?

What is breaking down organic matter and releasing phosphorus back into the soil?

300

Give an example of how matter is transferred between living organisms and the environment.

What is the transfer of carbon from plants to animals through the food chain?

400

What happens to nitrogen in the soil after plants die?

What is decomposition?

400

Name a significant way carbon is stored in the Earth

What are oceans, forests, and soil?

400

 Describe how water is transferred from the surface to the atmosphere.

What is through evaporation and transpiration?

400

Why is phosphorus important for plants?

What is it helps in energy transfer and photosynthesis?

400

What role do decomposers play in the transfer of matter?

What is breaking down dead organic material and returning nutrients to the soil?

500

Describe how human activities can impact the nitrogen cycle.

What is the use of fertilizers that can lead to runoff and water pollution?

500

Explain the role of carbon in regulating Earth's climate

What is carbon dioxide's effect as a greenhouse gas, trapping heat in the atmosphere?

500

Explain the concept of watershed in the water cycle.

What is the area of land where all the water drains into a common waterway?

500

Discuss how human activity can disrupt the phosphorus cycle.

What is the use of phosphorus-rich fertilizers that can cause runoff and eutrophication in water bodies?

500

Describe the importance of biogeochemical cycles in ecosystem health.

What is they ensure the availability of essential nutrients for living organisms, supporting life on Earth?