Определите, какой частью речи является подчеркнутое слово

1. Some rocks are formed from the remains of plants.

2. The origin of life on Earth remains one of the most interesting problems in modern science.

3. A glacier deposits its loads on land or in the sea.

4. Rock deposits may be stratified.

5. Metamorphism changes the original characteristics of rocks.

6. Temperature and pressure cause great changes in the chemical composition of rocks.

7. In some places the wind forms sand dunes.

8. Sand dunes may be of different forms.

9. Geological processes shape the lands.

10. This rock is of irregular shape.

Ex.9.

Выберите нужный по смыслу вариант из приведенных в скобках.

1. The real difference between the centre of Africa and the centre of America is that in the (former/formerly) water is water and in the (later/latter) water is ice.

2. In general, waves are of two types: swell waves and storm waves. Both are generated by the wind but the (letter/latter) more directly than the (farmer/former).

3. The earth warmed up and cooled off several times. In comparison to some (former/formal) eras of geologic history today we live in one of the “ice age”.

4. It was (formally/formerly) supposed that the entire interior of the Earth was liquid.

5. Molten magma contains large quantities of both oxygen and hydrogen. In cooling they combine to form water. The (later/latter) is an extremely active agent.

Ex.10.