NC 8th grade Life Science Review

Front

What is a bio-indicator?

Back

A species that depends on specific conditions to survive.

Front

What is a nonpoint source of pollution?

Back

Runoff from a road into a nearby stream.

Front

What is adaptation in biology?

Back

Changes in physical structure, function, or behavior that allow an organism to survive.

Front

What determines the number of wolves that can live in an area?

Back

The amount of food available in the area.

Front

How can scientists determine the approximate age of dinosaur bones?

Back

By using index fossils found in the area of the bones.

Front

What is the definition of interdependence in ecosystems?

Back

The reliance of organisms on each other for survival.

Front

What is the role of producers in an ecosystem?

Back

Producers create energy through photosynthesis, forming the base of the food chain.

Front

What is a food web?

Back

A complex network of feeding relationships among organisms in an ecosystem.

Front

What is the difference between a habitat and a niche?

Back

A habitat is the environment where an organism lives, while a niche is the role it plays in that environment.

Front

What is the significance of biodiversity?

Back

Biodiversity contributes to ecosystem resilience and stability.