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Biology, 07.04.2020 01:36 klysse123

A school is planning new landscaping for its grounds. To
determine which material to use in their plans, a science class
carried out experiments to find out how quickly water
percolates through different materials. How do we know
whether the results are valid?

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A school is planning new landscaping for its grounds. To
determine which material to use in th...

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