Unit 4 revision

Match the following antonyms (vastandtähendusega sõnad)

• simple

• big

• reduce

• complicated

• small

• increase

• save

• solution

• problem

• waste

What can be polluted?

• water

• air

• clothes

• buildings

How big will Earth's population be by 2050? (approximately)

• 9.7 billion

• 5 billion

• 10 million

• 7

Insects are a great source of ​ (a)   !

• protein
• vitamin D
• apple juice
• sugar

What is on the picture?

• Great Pacific Garbage Patch

• Kihnu island

• Huge bird nest

• Great Barrier Reef

Answer explanation

The garbage patch is about three times bigger than the country of France. ):

When we farm animals, we need huge amounts of ​ (a)   for them to drink and ​ (b)   so they have somewhere to move.

• water
• land
• protein
• ocean
• increase
• convince

165 million children haven't got ​ (a)   food.

• enough
• some
• a few
• many