Câu hỏi:

 Supply the correct form of the words in brackets.

Forests from an integral component of the (21. SPHERE)_______ are essential to the (22. STABILITY)_______ of global climate and the management of water and land. They are home for (23. COUNT)_______ plants and animals that are vital elements of our life-supporting systems, as well as for millions of forest (24. DWELL)_______ . They provide goods for direct (25. CONSUME)_______ (including recreational activities) and land for food production. They also represent capital when converted to shelter and (26. FRASTRUCTURE)_______ . The two main types of forests are tropical, which are rich in (27. DIVERSITY)_______ and valuable tropical (28. WOOD)_______ and temperate, which serve as the world’s primary source of industrial wood. The temperate forests (1.5 billion hectares) can be found mainly in developed countries, whereas the tropical forests (both moist and dry, (29. TOTAL)_______ about 1.5 billion ha each) stretch across the developing world. Two thirds of the tropical moist forests are in Latin America, with the (30. REMAIN)_______ split between Africa and Asia; three quarters of the tropical dry forests are in Africa.

Forests from an integral component of the (21. SPHERE)_______ are essential to the (22. STABILITY)_______