Complete each sentence with word or phrase from 1.

1. In a _______, some animals eat other animals and become food for a third group of animals.

2. A _______ is often wide and its plants are mostly grass and flowers.

3. Areas of land to protect animals and plants are called _______.

4. The North and South _______ are both extremely cold and icy.

5. Natural _______ for pandas are bamboo forests.