Pgs. 320-321 Why does the author state that water on Earth is like "one global well?" Why does the author say that water is important?

Study the chart on page 323. Where is the most and least amont of water on Earth?

Pgs. 324-325 What does the word condensation mean?

Pgs. 324-325 How does water move from Earth's surface to the air and back?

The text in the fourth paragraph on page 327 says that after water has transpired from a plant's leaves, it "is added to the cycle of water on Earth." Review the information about the water cycle on page 324. What part of the water cycle is transpiration most similar to? How do you know?

Pgs. 338-329 Why is water important to animals?

Pgs. 330-331 What is the main idea of the section titled "People at the well?"

Pgs. 332-333 How does the water cycle help clean water?

Pgs. 332-333 How do people's actions affect the water cycle?

Essential Question: Why is water a valuable natural resource?