Cycles in Ecosystems and Their Interactions P1

Front

What is the nitrogen cycle?

Back

The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms, including nitrogen fixation, nitrification, denitrification, and ammonification, allowing nitrogen to be used by living organisms.

Front

What role do decomposers play in an ecosystem?

Back

Decomposers break down dead organic matter, returning nutrients to the soil and making them available for producers, thus playing a crucial role in nutrient cycling.

Front

What is the primary source of nitrogen for plants?

Back

The primary source of nitrogen for plants is the soil, where it is available in forms such as nitrates and ammonium.

Front

How does combustion of fossil fuels affect the carbon cycle?

Back

Combustion of fossil fuels releases carbon dioxide into the atmosphere, increasing greenhouse gas concentrations and impacting global climate.

Front

What is the significance of leafcutter ants in tropical rain forests?

Back

Leafcutter ants recycle nutrients back to the soil by decomposing plant material, which supports plant growth and maintains ecosystem health.

Front

Define producers in an ecosystem.

Back

Producers are organisms, primarily plants and algae, that create their own food through photosynthesis, forming the base of the food chain.

Front

What is the water cycle?

Back

The water cycle is the continuous movement of water through evaporation, condensation, precipitation, and infiltration, essential for sustaining life on Earth.

Front

Explain the term 'biome'.

Back

A biome is a large geographic biotic unit, a major community of plants and animals with similar life forms and environmental conditions, such as a rainforest or desert.

Front

What is nutrient cycling?

Back

Nutrient cycling is the movement and exchange of organic and inorganic matter back into the production of living matter, crucial for ecosystem sustainability.

Front

What is the role of fungi in ecosystems?

Back

Fungi decompose organic matter, recycle nutrients, and form symbiotic relationships with plants, aiding in nutrient absorption.