Choose the correct option a-c to complete the sentences.

0 It is very... for natural areas when people respect them when they visit.

a respectful b sustainable c helpful- answer

1 Too much human activity can ....wild animals, so they are not able to live normally. They may hide or run away.

a damage b disturb c waste

2 Wind is an example of a ....source of energy because we can use it repeatedly. We don't need to worry that it will finish or damage the environment.

a sustainable b thoughtful c respectful

3 Industries ... the environment: for example, by pollution or habitat destruction.

a damage b disturb c reduce

4 If industry creates products we can... then there will be less rubbish.

a sustain b help c reuse

5 If you are ... about nature, you will understand it better and know how to protect it better.

a respectful b sustainable c thoughtful