Ecosystems 8th grade review

Front

What happens to most energy as it goes through a food web?

Back

It changes to heat.

Front

How are oxygen and carbon dioxide cycled through an aquatic pond ecosystem?

Back

Phytoplankton use carbon dioxide and produce oxygen during photosynthesis; phytoplankton, fish, and frogs use oxygen and produce carbon dioxide during respiration.

Front

Which level of a food pyramid produces the greatest amount of energy as a food source?

Back

Plants/Producers/Autotrophs.

Front

What is an example of competition in an ecosystem?

Back

Large Mouth bass and catfish living together in the same small pond.

Front

What is the primary source of energy for most cells in the human body?

Back

Sugars.

Front

Define an ecosystem.

Back

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

Front

What are producers in an ecosystem?

Back

Producers are organisms that create their own food through photosynthesis, such as plants.

Front

What role do decomposers play in an ecosystem?

Back

Decomposers break down dead organic material, returning nutrients to the soil.

Front

What is the difference between a food chain and a food web?

Back

A food chain is a linear sequence of organisms where each is eaten by the next, while a food web is a complex network of interconnected food chains.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants use sunlight to synthesize foods with the help of chlorophyll.