What Do You Know About The Natural World - Outcomes Int 11.3 WB

How much of the Earth's surface ______ _______ in water? (cover)

How much of the Earth's surface is covered in water?

• A. about 20%

• B. about 70%

• C. about 90%

Which area ______ sometimes ________ as the 'lungs of the earth'? (know)

Which area is sometimes known as the 'lungs of the earth'?

• 
  A. the Brazilian rainforest

• B. the River Nile

• C. the Arctic

Which regions ______ ______ for 'auroras' (natural displays of light in the sky)? (know)

Which regions are known for 'auroras' (natural displays of light in the sky)?

• A. rainforests

• B. deserts

• C. polar regions

How many plants species ______ ________ in medicines worldwide? (use)

How many plants species are used in medicines worldwide?

• A. 100–200

• B. 1,000–2,000

• C. 10,000 – 20,000

Which plants ______ ______ ______ over the centuries for use as painkillers? (develop)

Which plants have been developed over the centuries for use as painkillers?

• A. poppy and willow

• B. garlic and tea

• C. rice and sugar cane