Biology

6th -

8th

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General Science Knowledge

1.2K

20 questions

  • 1. Multiple Choice
    30 seconds
    1 pt
    In a controlled experiment,
    there are at least two variables
    a control group is compared with one or more experimental groups
    a variable is not needed
    should only be conducted one time
  • 2. Multiple Choice
    30 seconds
    1 pt

    A life scientist who observes the relationships between plants, animals, weather and soil on a mountaintop is studying a(n)

    community

    ecosystem

    population

    organism

  • 3. Multiple Choice
    30 seconds
    1 pt

    Which of the following statements best describes the composition of air?

    air is only made up of nitrogen

    air is only made up of oxygen

    air is only made up of carbon dioxide

    air is made up of a mixture of different gasses

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