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Ecosystems

  • 1 subtopics
  • 6 things to know
  • Paper 1

What Ecosystems covers

Ecosystems is examined in Paper 1, Living with the physical environment. It covers ecosystems at every scale: interrelationships, balance and global distribution.

Where it is assessed

Paper 1

Living with the physical environment, 35% of the GCSE.

Check the AQA specification ↗

The 1 subtopics

Each one has its own page.

What you need to know

Answer each one before you reveal it.

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Key term

What is an ecosystem, and what roles do producers and decomposers play within it?

Key term

How can the loss of vegetation eventually reduce the fertility of an ecosystem's soil?

Key term

How do the tundra and polar regions differ in their vegetation?

Key term

What is an ecosystem?

Key term

What is a producer, and how does it obtain the energy it needs?

Key term

What is a consumer, and what is the difference between a primary and a secondary consumer?

Take Ecosystems further

The same content, four other ways.

Commonly confused

Pairs that lose marks when they are blurred together.

  • Producer vs Consumer

    Producer: a green plant that makes its own food by photosynthesis. Consumer: an animal that gets its energy by eating other organisms.

  • Primary consumer vs Secondary consumer

    Primary consumer: an animal that eats plants. Secondary consumer: an animal that eats plant-eaters.

  • Food chain vs Food web

    Food chain: a single line along which energy passes from one organism to the next. Food web: the many feeding links that join species together.

Questions from this topic

Each one with the model answer underneath.

  1. 1

    What is an ecosystem?

    Model answer

    A community of plants and animals that interact with each other and with the non-living parts of the place they live in.

  2. 2

    What is a producer, and how does it obtain the energy it needs?

    Model answer

    A green plant that makes its own food by photosynthesis using sunlight, so it forms the first link of any feeding sequence.

  3. 3

    What is a consumer, and what is the difference between a primary and a secondary consumer?

    Model answer

    An animal that gets its energy by eating other organisms; a primary consumer eats plants, while a secondary consumer eats primary consumers.

  4. 4

    What is a decomposer, and what does it do to dead material?

    Model answer

    A bacterium or fungus that breaks down dead plant and animal remains, releasing the nutrients they hold back into the soil.

  5. 5

    What does a food chain show?

    Model answer

    The single line along which energy is passed from one organism to the next as each is eaten by the one above it.

  6. 6

    Why does a food web give a more realistic picture of feeding than a single food chain?

    Model answer

    Because most animals eat several different things, so a web shows the many feeding links that join species together rather than just one line.

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Ecosystems revision questions

What does Ecosystems cover in AQA GCSE Geography?
1 subtopics: ecosystems at every scale: interrelationships, balance and global distribution. Each one has its own page with questions and model answers.
How is Ecosystems organised?
By the AQA 8035 specification, subtopic by subtopic, so it matches the order you are taught it in.

Every question in Ecosystems, on a schedule.

Attempt a question from memory, write the correct version, then attempt it again. Levo records the jump between your first attempt and your last, and brings each question back on the day you are due to forget it.

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