Cuc Phuong National Park has a very rich ________.

nguyên liệu thô, vật liệu thô (n)

A healthy ecosystem brings many ________, such as cleaning our air and water, providing food and controlling climate change.

As species disappear, the ________ may break down.

U Minh Thuong National Park covers a large area of freshwater wetlands, including ________.

Banning the hunting of wild animals is a good way to ________ local biodiversity.

illegal hunting and poaching can be a major threat to ________.

________ is any animal that gives birth to live young, not eggs, and feeds its young on milk.

The ________ of fertilizers causes environmental pollution as their residual and unused amounts will become pollutants for air, water, and soil.

________ is an area of low, flat land, sometimes shaped like a triangle, where a river divides into several smaller rivers before flowing into the sea.