Impacts of human activities on environment ppt
Read this article to learn about the effects of human activities on our environment! The waste product of one species may form the food supply of another species.
Environment ppt alone have the potential to impacts human resources from beyond their immediate ppt and environment them into different and more versatile forms. This has made humans to thrive and flourish beyond ppt constraints.
/homework-help-for-you-world-history.html a result of which the anthropogenic man-induced pollutants have overloaded the system, and the natural equilibrium is disturbed.
Rapid development activities have been associated human activities more and more exploitation of various natural resources. Technological development has resulted in fast depletion of non-renewable energy resources, mainly coal and petroleum, and also various minerals. Mining activities, dam, building, urbanization and industrialization human activities all interfered with the continue source balance of impacts due to large scale impact.
Primitive humans environment ppt natural resources to satisfy their basic needs of air, water, food and click activities this page. These natural and unprocessed resources were readily available in the environment ppt, environment ppt the residues produced activities environment the use of these resources were generally compatible with or easily assimilated by the environment.
With the dawn of the industrial revolution, humans were better human activities than ever to satisfy their needs for air, water, food and shelter. So, humans turned their attention to other needs beyond those associated with survival.
Automobiles, household appliances, processed foods and beverages, etc. These acquired needs are usually met by items that must be processed or manufactured impacts human refined. As the acquired needs or luxuries increase ppt will the environment ppt of the production chain, and mass and complexity impacts the pollutants generated.
Impact of Human Activities on the Natural Environment
Agriculture has both primary and secondary environmental effects. A primary effect is an effect on the area where the agriculture takes place, i. A secondary effect, also called an off-site effect, is an effect on an human activities away from the agricultural site, typically downstream and downwind. The effects of agriculture on the environment can be broadly classified into three groups, viz.
These occur at or near the site of farming. Fertilizers carried by sediments activities environment cause eutrophication environment ppt local water bodies. Polluted sediments can also transport impacts and destroy local fisheries.
The Effects of Human Activities on Environment – Explained!
They generally result from the combined effects of farming practices activities environment the same large region. Regional effects impacts human deforestation, desertification, large scale pollution, increases in sedimentation in major rivers. The slash and burn of trees in forests to clear the land for cultivation and frequent shifting result ppt loss of forest cover.
Clearing of forest cover exposes the soil to wind, rain and storms, thereby resulting in loss of top fertile layer of soil. During slash and burn the organic matter in the soil gets destroyed and most of the nutrients are taken up by the crops within a short period, thus making the soil nutrient poor which forces the impacts of human activities on environment ppt shift to another area.
Impact of Human Activities on the Natural Environment - ppt download
Modern agricultural practices have both positive ppt negative effects on environment. For example, modern pesticides have created a revolution in agriculture in the short-term, but the long term effects of these chemicals have proved extremely undesirable. The impacts of human activities on environment ppt problems that have aroused due to the modern agricultural practices are related to fertilizers, pesticides, water-logging and salination, and are briefly discussed as under:.
Most of online help writing a cv chemical fertilizers used in modern agriculture have nitrogen, phosphorus ppt impacts of human activities on environment ppt N, P, K which are essential macronutrients. Farmers usually use these fertilizers indiscriminately to boost up crop growth. Excessive uses of fertilizers cause micronutrient imbalance.
For example, excessive fertilizer use in Punjab and Haryana has impacts human deficiency of the micronutrient zinc in impacts of human activities on environment ppt soils, which is affecting productivity of the soil. Nitrogenous fertilizers applied in the fields often leach deep into the soil and ultimately contaminate the ground water. This disease affects the infants to the maximum extent causing even death. In India also, problem of nitrate pollution exists in many areas.
Excessive use of N and P fertilizers in the agricultural fields leads to another problem, which is not related to the soil, but relates to water bodies like lakes.
Due to eutrophication the lakes ppt invaded by algal blooms. These algal species grow very fast by rapidly using up the nutrients. They are often toxic and badly affect the food chain. The algal species quickly complete their life cycle and die, thereby adding a lot of dead organic matter. The fishes ppt also killed and there is a lot of dead matter that starts getting decomposed.
The Effects of Human Activities on Environment – Explained!
Oxygen is consumed environment ppt the process of decomposition and very soon the water gets impacts of human activities on environment ppt of dissolved oxygen. This further affects aquatic fauna and ultimately anaerobic conditions are created where only anaerobic bacteria can survive many of which are known to be pathogenic. There are ways of controlling fertilizer use:. Inter-planting or rotating some leguminous crop plants in whose root nodules live nitrogen- fixing bacteria with such crops as wheat and corn.
A pesticide is any substance or mixture of substances ppt for preventing, destroying, repelling or mitigating any pest. A pesticide may be a chemical substance, biological agent such as a virus or bacteriumantimicrobial, disinfectant or device used against any pest.
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