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Exercise 3: Complete the sentences with the given words in exercise 4.
1. Flowers are part of the __________ that grows in gardens and forests.
2. The North __________ is covered in ice and surrounded by the Arctic Ocean.
3. Plants are at the beginning of the __________ because they make their food from sunlight.
4. The African savanna has a rich __________, such as lions and zebras.
5. The brightness of stars in __________ can vary depending on their size and distance.
6. During our visit to the __________, we saw a family of raccoons near the trail.
7. The __________ has eight planets including Earth.
8. The ocean is a vast __________ covering most of the Earth’s surface.
Exercise 4: Choose the best options to complete the sentences.