a. The population is increasing at an alarming rate and our natural resources are being used even at a faster rate. Increasing population has also lead to various devastating effects on our ecosystem as well. Increasing population has resulted in various problems like:
b. Urbanisation is a term which refers to the general increase in population and the amount of industrialization of a settlement. Urbanisation leads to various problems like land insecurity, worsening water quality, excessive air pollution, noise and the problems of waste disposal.
c. Wars can occur due to various reasons like differences and competition over land, water, mineral resources. It can also occur due to economic and political reasons.
d. Ecosystem is made up of two types of components - biotic and abiotic components. Abiotic factors include light, temperature, water, air, soil, inorganic nutrients, etc. They are the non-living components of any habitat. Biotic factors are the living components of any habitat. They include plants, animals, etc. Both the biotic and abiotic factors in an ecosystem interact with each to maintain the balance of an ecosystem. The abiotic factors play an important role in the distribution and survival of biotic factors in an ecosystem. The proportion of abiotic factors is not constant and always keeps on changing as they are used or excreted by the biotic factors. It is not only the abiotic factor which affects an ecosystem but the biotic factors also have an equal effect on abiotic components as well as other biotic components.
Evergreen Forests |
Grasslands |
These land biomes are found in regions with surplous rains. |
These land biomes are found in regions with long summers and limited rainfall. |
They consiste of dense and multi layers of different types of trees. |
They mainly consist of long grasses. |