Ecosystem Stability and Interdependence

The video lesson introduces the importance of communities in ecology, focusing on abiotic and biotic factors. It includes retrieval practice on genetic variation, an overview of the AQA specification, and a discussion on stable communities. The lesson concludes with instructions for completing an exam question.

What is the main focus of today's lesson?

• Genetic variation

• The importance of communities

• Photosynthesis

• Cell division

What is the purpose of the retrieval practice in this lesson?

• To introduce new concepts

• To recall previously learned information

• To test students' writing skills

• To practice mathematical calculations

Which of the following is a biotic factor in an ecosystem?

• Wind intensity

• Sunlight

• Temperature

• Predators

Which of the following is an abiotic factor?

• Pathogens

• Competitors

• Availability of oxygen

• Predators

What defines a stable community?

• Constant change in populations

• Stable abiotic and biotic factors

• Frequent natural disasters

• High levels of pollution

In a stable community, what remains consistent?

• Human activities

• Weather patterns

• Animal populations

• Seasons

What is interdependence in an ecosystem?

• Living things relying on each other

• Abiotic factors affecting biotic factors

• Competition among species

• Isolation of species

Which term refers to non-living factors in an ecosystem?

• Biotic

• Symbiotic

• Parasitic

• Abiotic

What should students do after reviewing the key terms?

• Take a break

• Start a new lesson

• Complete the exam question

• Ignore the exam question

What is the final task in the lesson?

• Watch a video

• Complete an exam question

• Conduct an experiment

• Write an essay