VII. Correct the mistakes in the sentences.

1. The oceans contain about 97% of the world’s water supply, and about another 2% of the world’s water is ices.

2. Brain waves patterns vary among different people and in different activities.

3. Dinosaurs are classified as reptiles, although some appear to have been warm-blood.

4. Human brain are more powerful than those of other species because of their complex circuitry.

5. The brain loses fifty thousands neurons a day and yet maintains its basic patterns and memories.

6. Each part of the brains controls a separate part of the body.

7. Intelligence is the ability to use thought and knowledges to understand things and solve problems.

8. The number of oxygen available to the brain is important.

9. If your brain gets fewer oxygen than it needs, you could become unconscious.

10. The most animals rely on instinct.