大象传媒

Ecosystems and habitats

Part of Biology

  • Ecosystems and habitats

    • Food chains and webs

      All organisms in an ecosystem depend on each other. Food chains show the flow of energy from one organism to another.

    • Changes to food webs

      All organisms in a food web depend upon each other and changes to one can affect the others.

    • Ecological sampling

      Sampling is the process of looking at part of a population or habitat to draw conclusions about the whole thing. Learn how sampling is used to find out about animals and plants.

    • Pyramids of number and biomass

      Pyramids of numbers and biomass are different ways of showing the amount of organisms at each stage in the food chain.

    • Kingdoms and classifications

      Learn how different species group together and how they are related to each other.

    • Adaptations of plants

      Plants live in a wide variety of habitats. Learn how each species is adapted to suit where they live.

    • Biodiversity, gene pools and extinctions

      Biodiversity is a measure of the range of living organisms within a habitat. A gene pool is the range of DNA in a species.

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