Trắc nghiệm từ vựng Unit 10 lớp 9 Planet Earth

With its diverse ecosystems and breathtaking landscapes, planet Earth is truly gorgeous. 

Many factories ________ harmful pollutants into the atmosphere.

Cuc Phuong National Park is the natural ________ for many rare species, both plants and animals.

The mountain ________, the highest points of the mountain, are often covered in snow year-round.

A food ________ shows you the order in which living things depend on each other for food.

Scientists study the ________ to understand the formation and evolution of planets.

Many national parks are established to conserve the Earth's unique ________.

Everyone can make a contribution to protect the environment.

The bamboo forest is the natural _______of the panda.

Flora and fauna are vital to the environment because they create __________.

A(n) ________ sunset over the savannah painted the sky with brilliant colours.

A species whose presence is critical to maintaining the ecological balance is called a keystone species.