E8 - UNIT 7 CHECK

______ trees and burning forests destroy a lot of wildlife habitats.

• watering

• cleaning up

• cutting down

The panda’s natural ______ is the bamboo forest.

• habitat

• ecosystem

• area

What is this?

• 3Rs

• 3R

• R3s

I was not at home ______ he came to see me yesterday.

• while

• when

• if

We cleaned up everything at the campsite ______ we left.

• until

• while

• before

What is that?

• plastic bags

• plastic rubbish

• plastic

hệ sinh thái

• system

• ecosystem

• extinction

môi trường

• environment

• environmental

• environmentally

(ô nhiễm không khí)

It involves gases or particles that makes the air harmful to health.

• air pollution

• noise pollution

• soil pollution

• water pollution

Choose the word with the underlined part which is differently pronounced from the others.

• pollution

• protect

• carbon

• ecosystem