Question

1. practice: fill in the two processes that cause each of the following transitions.

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a. ocean → cloud
b. cloud → glacier

1. think and discuss: water covers over two - thirds of earth’s surface. yet water shortages are a major problem for many people around the world. why do you think this is the case?

Explanation:

For A, water in the ocean evaporates to form water - vapor which then condenses to form clouds. For B, water vapor in clouds freezes and then falls as snow which accumulates to form glaciers. For question 6, most of Earth's water is salt - water in the oceans, not suitable for human use. Also, water distribution is uneven, and pollution can contaminate freshwater sources.

Answer:

A. Evaporation, Condensation
B. Freezing, Precipitation

1. Most water is salt - water, uneven distribution, and water pollution.