Q-4(A) Write down any three human activities that have adversely affected various spheres on the Earth.
Answers
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Answer:
The human activity that affect the various spheres of the Earth was explained below.
Explanation:
The Spheres of the Earth are:
- Hydrosphere - all water sources like river, ocean, lakes
- Lithosphere - solid Earth surface
- Atmosphere - all gases
- Biosphere - all life on the Earth
The human activity that affect the hydrosphere of the Earth was sewage disposal, thermal discharge in water bodies (thermal pollution), oil spills and the building of new dams . This leads to decrease in water level and affect the wildlife.
Pollution, depletion of nutrients, mining, deforestation, urbanization and overgrazing due to these activities the lithosphere of the Earth gets affected.
The human activities like deforestation, pollution, burning of fossil fuels, waste gases released from the industries affect the atmosphere of the Earth. Which also leads to the global warming by the changes in the green house gases
The human activities like hunting, overgrazing, and deforestation affect the biosphere of the Earth.
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