All organisms in an ecosystem are dependent on others in the system.

In this topic you need to know about the following: -

  • How producers make small organic molecules such as glucose, fatty acids and amino acids for consumers.
  • How consumers produce waste prodcuts such as carbon dioxide which are needed by producers.
  • The biotic and abiotic factors in an ecosystem.
  • How nutrients are cycled in an ecosystem.

    • Use the arrows below to continue to revise.

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