Hard
Can salt, calcium chloride, and magnesium sulfate affect the survival of radishes? Find out in this experiment!
Hard
Does chlorine affect the germination of soybean seeds? Find out in this experiment!
Hard
Can different types of soil absorb different kinds of pollutants? Find out in this experiment!
Medium
Let's find out how land use in the 1940s affects the amount of arsenic in the soil today!
Easy
Are natural pesticides as effective as chemical ones? Find out in this experiment!
Medium
Plants can help clean up pollution! In this experiment, you'll explore how plants can be used to remove copper from soil.
Easy
Let's explore the different populations in soil, observe water and wind erosion, and construct a levee flood control technique!
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