7th Gr Unit 6&9 Review

Front

What is an ecosystem?

Back

An ecosystem is a community of living organisms (plants, animals, and microorganisms) interacting with their physical environment (soil, water, and climate).

Front

What is a food chain?

Back

A food chain is a linear sequence that shows how energy and nutrients flow from one organism to another in an ecosystem.

Front

What is a food web?

Back

A food web is a complex network of interconnected food chains that illustrates how different organisms in an ecosystem are related through feeding relationships.

Front

What happens when a nonnative species is introduced to an ecosystem?

Back

Nonnative species can disrupt local ecosystems by outcompeting native species for resources, leading to a decrease in biodiversity.

Front

What is the role of producers in an ecosystem?

Back

Producers, such as plants, convert sunlight into energy through photosynthesis, forming the base of the food chain.

Front

What is the impact of overpopulation of a species in an ecosystem?

Back

Overpopulation can lead to resource depletion, habitat destruction, and a decline in the populations of other species due to increased competition.

Front

What is biodiversity?

Back

Biodiversity refers to the variety of life in a particular habitat or ecosystem, including the number of different species and their interactions.

Front

What is the significance of decomposers in an ecosystem?

Back

Decomposers break down dead organic matter, recycling nutrients back into the soil, which supports plant growth.

Front

What is a habitat?

Back

A habitat is the natural environment in which a particular species lives, providing food, shelter, and mates for reproduction.

Front

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

Back

A food chain shows a single pathway of energy flow, while a food web shows multiple pathways and interactions among organisms.