Choose a headline for each paragraph

Say whether the following statements are true or false. Give the paragraph number to show where the information comes from. Correct the false statements.

1. Pure water consists of two parts oxygen and one part hydrogen.

2. Pure water is useful for plants and animals.

3. Sulphur compounds in the Bear Creek area of northern Alabama give water a bad taste.

4. Natural occurrences and large population of wild animals can cause severe pollution of lakes and streams.

5. Pesticides and fertilizers used in agriculture do not pollute water supplies.

6. Many thousands of pounds have been spent on facilities that reduce the pollution caused by human activity

7. The operation of dams and reservoirs causes problems for fish and other aquatic life downstream.

WRITING

5. What elements are expressed by the following chemical formulas?

O₂ – Mn –

H – S –

Fe –

Read the text again and complete the following table.

Complete the following table of the corresponding nouns and verbs. Use a dictionary if needed.

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