Unit 2 Lesson 12

7  Complete the sentences with an appropriate form of the words in the box.(Lesson 12)

Engineer    Populate      Ethics    Controversy     Science

a) The population of the world is growing. Will we be able to grow enough food?

b) One reason GM crops are controversial is that we do not know what the health risks may be.

c) Scientists want to recreate the wooly mammoth.

d)Is it ethical to clone a human being?

f) Genetic engineering is a new discipline

8  Complete these sentences with the verbs in parentheses in the correct tense.(Lesson 12)

a  Does he sometimes  use (use) the internet to find information?

b  When  did scientists  clone the first animal ? (clone)

c   The woolly mammoth has not existed  (not exist) for thousands of years now.

d   Will we be able to (be able to ) stop people from getting old in the future.?

e   Are scientists doing  (do) enough research about the effects of GM crops?