Question

The percentage of land covered by forest in the world is
A) 9-18%
B) 18-27%
C) 27-36%
D) More than 50%

Answer 1

Hint:Forests are regions that are very highly populated with trees of a variety of species. They harbour a wide range of organisms forming one of the largest terrestrial ecosystems on Earth.

Complete answer:
Forests are known to account for seventy five percent of the gross primary productivity and comprises eighty percent of the earth's plant biomass. They occupy thirty one percent land globally. Forest comprises all forms of trees, grasses and shrubs. Forests are divided into different layers where each layer consists of different plants and animals based on the sunlight and the food available. These layers are- forest floor which comprises decaying leaves and dead trees, understory which consists of bushes, shrubs and young trees, canopy which consists of mature trees, emergent layer consists of few scattered trees. Forests are of different types- boreal that occupy the subarctic zone, temperate forest and tropical forest. Temperate and tropical forest are further subdivided according to the region they are present in. Forests are of significance as the trees serve to produce oxygen, regulate climate, serve as source of food, provide economically valuable products.

Hence the correct answer is opton (C) 27-36%.

Note:Thus we know that forests are quite significant in maintaining the climate as well as providing substances useful for humans. So deforestation should be avoided since it is not only leading to climatic changes and global warming but also loss of habitat and important resources that are required for survival.