unit 2 Lesson 12

video 12 unit 2

7.Complete the sentences with an appropiate form of the words in the box.  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 woolly mammoth.

d).Is it ethical to clone a human being?

e. Genetic enginnering is a new discipline.

8 .Complete the 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?