Biology Topic Practice

Biotic & Abiotic Factors

Ecosystems are influenced by a wide variety of factors, categorized into living and non-living components.

Can you distinguish between biotic and abiotic?

What is Biotic & Abiotic Factors?

"Biotic factors are living components of an ecosystem, such as predators and pathogens, while abiotic factors are non-living components, such as temperature and light."

Question 1

Which term describes the non-living conditions in a habitat, such as temperature and light intensity?

Question 2

Why can lichens be used as indicator species for air pollution?

Question 3

What is meant by interdependence in a community?

Question 4

Which of these is a biotic factor that can affect the distribution of organisms?

Environmental Influences

Abiotic factors: Temperature, light intensity, moisture, soil pH, and wind intensity.

Biotic factors: Availability of food, new predators, new pathogens, and competition.

Exam Tip

A stable community is one where all the species and environmental factors are in balance.

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