Trees help protect water quality.
Meaning: This sentence is saying that trees are important for our health because they help to protect water quality.
Choice of Words: Trees are large plants that have a trunk and branches. Help means to make something easier or possible. Protect means to keep something safe from harm. Water is a liquid that is essential for life. Quality is the degree of excellence or worth of something. When we put these words together, it means that trees help to keep water clean and safe to drink.
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