Ecosystem
Ecosystem term is first proposed by A.G. Tansley in 1935. According to Tansley "Ecosystem is the ecological unit consisting of biotics and abiotic components of the environment in a specific area" Eg.- Grassland ecosystem Forest ecosystem Desert Ecosystem Components of ecosystem There are two components of the ecosystem- Biotic components-All living things available in Ecosystem is biotic components. Abiotic components- other than biotic components are known as Abiotic components. classification of Ecosystem…
Deforestation
Definition Excess cutting of tree forest without plantation is called deforestation. Forest produce vital oxygen and provide homes for people and wildlife. Many of the world’s most threatened and endangered animals live in forests, and 1.6 billion people rely on benefits forests offer, including food, fresh water, clothing, traditional medicine, and shelter. Deforestation is clearing Earth's forests on a massive scale, often resulting in damage to the quality of the l…
Two stroke and four stroke engine
Difference between the two strokes and four stroke engine- Please watch in desktop mode S.No. Four stroke engine Two stroke engine 1. It has one power stroke for every two revolutions of the crankshaft. It has one power stroke for each revolution of the crankshaft. 2. A heavy flywheel is required and the engine runs unbalanced because turning moment on the crankshaft is not even due to one power stroke for every two revolutions of the crankshaft. The lighter flywheel is required and the engine runs balanced because …
Structure of atmosphere
What is the atmosphere? The atmosphere is the mixture of gases and water vapor which surrounds any planet system. E.g. For earth, these gases are oxygen, carbon dioxide, nitrogen and water vapor, etc. The atmosphere is classified into five parts- Troposphere Stratosphere Mesosphere Thermosphere Exosphere* segments of atmosphere Earth's atmosphere is about 300 miles (480 kilometers) thick, but most of it is within 10 miles (16 km) the surface. Air pressure decreases with altitude. At sea level, air pressure is abou…
solid waste management
What is solid waste? Any solid component that is thrown out after use and that materials effects the environmental conditions are known as solid waste. According to Britannica, “Solid-waste management, the collecting, treating, and disposing of solid material that is discarded because it has served its purpose or is no longer useful. Improper disposal of municipal solid waste can create unsanitary conditions, and these conditions in turn can lead to pollution of the environment and to outbreaks of vector-borne disease—that is, diseases s…
Sustainable development
sustainability- Sustainability is the development that satisfies the needs of the present without compromising the capacity of future generations , guaranteeing the balance between economic growth, care for the environment and social well-being. Sustainable development is a concept that appeared for the first time in 1987 with the publication of the Brundtland Report, warning of the negative environmental consequences of economic growth and globalization, which tried to find possible solutions to the problems caused by industr…
Effect of human activity on environment
Some human activity effects the environment Transportation Mining Industrilization Cultivation or Agriculture Housing 1) transportation The growth of speedy transportation is man’s greatest achievement in minimizing distances but at the same time it has also become a cause of environmental degradation. Air pollution: Transport is a major source of air pollution not only in developed but in developing countries also. Ecologists believe that the rapid increase in the number of vehicles on our roads, which has taken place wit…
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