They are working to preserve the delicately balanced ___of these wetlands.
A. biodiversity
B. ecosystem
C. environment
D. surrounding
biodiversity (n): sự đa dạng sinh học
ecosystem (n): hệ sinh thái
environment (n): môi trường
surrounding (n): vùng lân cận
=> They are working to preserve the delicately balanced ecosystem of these wetlands.
Tạm dịch: Họ đang làm việc để bảo tồn hệ cân bằng sinh thái của những vùng đất ngập nước này.
Đáp án: B
The area is roped off because the water is seriously polluted.
If wastes are thrown ______, they can cause pollution in water, land and air.
Fossil fuels which are non-renewable pollute the air and cause air ______.
Recycling provides a method of reducing the amount of waste materials that gets to the landfills – thus ______ it less probable for environmental pollution to take place.
We need to cut down on our fuel ____ by having fewer cars on the road.
Choose the best answer to complete each sentence. What this country needs is a ____ policy for investment in science and technology.
Choose the best answer to complete each sentence. The Forestry Commission is responsible for____ over 2 million acres of woodland.
The effects of _____ are the environmental and social changes caused (directly or indirectly) by human emissions of greenhouse gases.