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In this activity, learners get a closer look at the shape of a drop of water and a drop of oil. Learners first drip water onto wax paper and examine the shape of separate drops from a side view.

Some aquatic organisms live in open water, while some live in soil at the bottom of a body of water.

Many people get water from a source deep underground, called groundwater.

Glare from the sun and ripples from the wind can make it hard to see what's below the surface of a body of water.