Matter and Energy in Ecosystems Chapter 3

Front

What is a producer in an ecosystem?

Back

A producer is an organism that can make its own energy storage molecules, typically through photosynthesis.

Front

What happens to the decomposer population when there is not enough food?

Back

The decomposer population decreases due to a lack of resources.

Front

What type of system is Earth classified as in terms of matter?

Back

Earth is classified as a closed system, meaning that matter does not enter or leave the system.

Front

Can carbon that gets trapped in the ecosystem be used for photosynthesis by plants?

Back

False, carbon that is trapped in the ecosystem cannot be used for photosynthesis.

Front

What do fossil fuels NOT include?

Back

Fossil fuels do not include glass.

Front

Define the term 'ecosystem'.

Back

An ecosystem is a community of living organisms interacting with their physical environment.

Front

What role do decomposers play in an ecosystem?

Back

Decomposers break down dead organic matter, recycling nutrients back into the ecosystem.

Front

What is the primary source of energy for producers?

Back

The primary source of energy for producers is sunlight.

Front

Explain the carbon cycle in simple terms.

Back

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

Front

What is the significance of photosynthesis in ecosystems?

Back

Photosynthesis is significant because it converts solar energy into chemical energy, providing food for producers and, indirectly, for consumers.