Front

What is the role of phosphorus in living organisms?

Back

Phosphorus is essential for the production of DNA, RNA, and ATP, which are critical for energy transfer and genetic information.

Front

What are the main processes of the water cycle?

Back

The main processes of the water cycle include evaporation, condensation, precipitation, infiltration, and runoff.

Front

What is transpiration in plants?

Back

Transpiration is the process by which plants lose water vapor through small openings in their leaves called stomata.

Front

Define the hydrosphere.

Back

The hydrosphere refers to all the water on the Earth's surface, including oceans, rivers, lakes, and water vapor in the atmosphere.

Front

What is the phosphorus cycle?

Back

The phosphorus cycle is the biogeochemical cycle that describes the movement of phosphorus through the lithosphere, hydrosphere, and biosphere, primarily involving sedimentary rocks.

Front

What is the significance of the water cycle for ecosystems?

Back

The water cycle is crucial for maintaining ecosystems as it regulates climate, supports plant growth, and provides water for all living organisms.

Front

How does human activity impact the phosphorus cycle?

Back

Human activities, such as agriculture and wastewater discharge, can lead to phosphorus runoff, causing eutrophication in water bodies.

Front

What is eutrophication?

Back

Eutrophication is the process by which water bodies become overly enriched with nutrients, leading to excessive growth of algae and depletion of oxygen.

Front

What are the main reservoirs of the water cycle?

Back

The main reservoirs of the water cycle include the atmosphere, oceans, rivers, lakes, glaciers, and groundwater.

Front

Explain the term 'biogeochemical cycle'.

Back

A biogeochemical cycle is the movement of chemical elements and compounds between living organisms and the physical environment.