Biology, Education

8th -

10thgrade

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IGCSE 0610 21 Human influences on ecosystems

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  • 1. Fill in the Blank
    30 seconds
    1 pt

    Carbon dioxide is a greenhouse gas.

    Name one other greenhouse gas

  • 2. Multiple Choice
    30 seconds
    1 pt
    Image

    A

    B

    C

    D

  • 3. Multiple Choice
    1 minute
    1 pt

    There can be a shortage of water in highly-developed countries where water use is very high.

    Some water is used to flush waste from domestic toilets.

    Choose all of the reasons why this water must be treated before it can be reused

    To remove any harmful pathogens from sewage

    To stop the water running out

    To reduce the pH of the water

    To remove harmful chemicals from the sewage

    To remove the floating poos from the sewage

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