tìm lỗi sai và giải thích :
1.The rapid growth of the world's population over the past 100 years have led to a great increase in the acreage of land under cultivation.
2. A significant proportions of the plants and animals of Hawaii exists nowhere else in the World.
3. The origins of the Democratic party is often traced to the coalition formed behind Thomas Jefferson in the 1790's to resist the policies of George.