V. Give the correct form of the word in bracket (2pts)
1. This river will soon become ________________ if the people here keep dumping waste into it. (POLLUTION)
2. Scientists say that exhaust fumes are______________ our city. (POISON)
3. Are all types of pollutions __________________ to the health of humans and animals. (HARM)
4. The _________________ of lakes, rivers, oceans or underwater causes water pollution. (CONTAMINATE)
V. Complete the passage with suitable word from the box (2pts)
destructive historical so like
also to areas flow
When a volcano erupts, hot gases and melted rock from deep within Earth find their way up to the surface. This material may (1) slowly out of a crack in the ground, or it may explode suddenly into the air. Volcanic eruption is may be very (2) . But they can (3) create new landforms.
Of the nearly 1 ,900 volcanoes active today, or known to have been active in (4) times, about ninety per cent can be found in the (5) of South America, North America, Asia, and Oceania that are close (6) the Pacific Ocean. When marked Oti a mapofthe world, this line Of volcanoes looks a bit (7) a vast. open circle. For this (8) it is known as the ring of fire.
1. polluted
2. poisoning
3. harmful
4. contamination
