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In this environmental science activity (page 3 of the PDF), leaners will identify and explain the causes of erosion.

In this investigation, learners plant seeds in a 2-liter bottle filled with soil that is connected to a water source below. Over the next few weeks, learners observe how the plants grow.

When it rains, water can collect on top of and seep into the ground. Water can also run downhill, carrying soil and pollution with it.