The key answer of exercise 4
The key to exercise solutions in chapter 3e - Speaking skills for the textbook On Screen B2+ - Student's Book with authors Virginia Evans and Jenny Dooley from Express Publishing
Question
In pairs use the language and key vocabulary to compare the pictures. Which is the most effective way to help the environment?
Answer
A: Well, both pictures show ways of saving energy and being environmentally friendly.
B: Yes, picture 1 shows a solar panel which is a way of producing a clean renewable source of energy using the sun and picture 2 shows a woman recycling which is a way of saving natural resources. Both save energy.
A: That's true, similarity solar panels give off no pollution and recycling reduces a waste because it prevents the waste of useful materials.
B: Yes, but in contrast, the installation of solar panels costs a lot.
A: That's true. Which one do you think is the most effective way to help the environment?
B: I think solar panels are more effective because they reduce pollution straight away. They use renewable clean energy and can stop burning fossil fuels which pollute the atmosphere and harm the environment.
A: I think recycling schemes are the most effective because they reduce waste and pollution straight away and without them there would be rubbish everywhere and landfill sites would be full.