What will happen if –
(a) Microbes in the soil get destroyed.
(b) The number of vehicles and factories in your surroundings increases.
(c) The total supply of potable water is finished.
(a) Microbes in the soil get destroyed.
(b) The number of vehicles and factories in your surroundings increases.
(c) The total supply of potable water is finished.
a. Soil contains various kinds of microbes like bacteria, fungi, algae, protozoa etc. All of these microorganisms play an important roles like:
- Certain bacteria and blue-green algae have the ability to fix atmospheric nitrogen. This, in turn, enriches the fertility of soil. Such microorganisms are known as biological nitrogen-fixers. Example − Rhizobium is a symbiotic bacterium which lives in the root nodules of leguminous plants. Rhizobium fixes atmospheric nitrogen into nitrogenous compounds.
- The bacteria and fungi present in soil decompose dead organic wastes of plants and animals, and convert them into manure. The manure contributes to the humus content of the soil, thereby helping in increasing its fertility.
- Not only these, microorganisms which are found in soil are also a part of many biogeochemical cycles which would not take place in their absence.
The above points explain the fact that how important microbes are and if they are destroyed its effect can be irreversible.
b. Vehicles and factories are the major sources of air pollution. If the number of vehicles and factories increase in our surroundings, it is obvious that it would result in increased levels of air pollution. Not only air pollution but they also result in noise pollution. In case, the no. of industries increase in our surrounding it means, more trees would have to be cut down to make way for them and thus resulting in damage to the environment.
c. If the total supply of potable water is finished then the life on earth will end. Water is required for the existence of living beings and in its absence, it owuld hamper their developemnt process and their survival.
- Certain bacteria and blue-green algae have the ability to fix atmospheric nitrogen. This, in turn, enriches the fertility of soil. Such microorganisms are known as biological nitrogen-fixers. Example − Rhizobium is a symbiotic bacterium which lives in the root nodules of leguminous plants. Rhizobium fixes atmospheric nitrogen into nitrogenous compounds.
- The bacteria and fungi present in soil decompose dead organic wastes of plants and animals, and convert them into manure. The manure contributes to the humus content of the soil, thereby helping in increasing its fertility.
- Not only these, microorganisms which are found in soil are also a part of many biogeochemical cycles which would not take place in their absence.
The above points explain the fact that how important microbes are and if they are destroyed its effect can be irreversible.
b. Vehicles and factories are the major sources of air pollution. If the number of vehicles and factories increase in our surroundings, it is obvious that it would result in increased levels of air pollution. Not only air pollution but they also result in noise pollution. In case, the no. of industries increase in our surrounding it means, more trees would have to be cut down to make way for them and thus resulting in damage to the environment.
c. If the total supply of potable water is finished then the life on earth will end. Water is required for the existence of living beings and in its absence, it owuld hamper their developemnt process and their survival.
