According to the Earth Observatory, the single most direct cause of deforestation is conversion of forestry to cropland and pasture. Other causes include urbanization and infrastructure expansion.Know More
The conversion to agricultural land is brought on by other direct factors. Experts say road improvement, while providing access to remote areas, results in some deforestation. Road expansion is followed by legal and illegal logging that creates farmland for new settlers and in turn makes the deforested areas more fire prone. In addition, major scale commercial operations, such as industrial scale cattle ranching in the Amazon in 2006, have been another driving force behind tropical deforestation. Similarly, scientists claim that agricultural tax breaks subsidies and other legal policies that encourage economic development are also underlying causes.
An article on LiveScience notes that effects from tropical deforestation are seen in soil erosion as the World Wildlife Fund states that scientists estimate about 30 percent of the world's fertile land has been lost to deforestation between 1960 to 2013. The resultant soil erosion may lead to contamination of water sources, thereby endangering local populations. Deforestation also causes an increase in greenhouse gas emissions as forest loss contributes 12 to 17 percent of annual emissions, as cited by the World Resources Institute in 2005.Learn more about Environmental Science
According to the Foundation for Sustainable Development, India's high population, coupled with its comparatively small geographic size, has resulted in major environmental degradation, including the loss of forests and the depletion of water and other natural resources. Air pollution, water pollution and an abundance of solid waste are major problems on the Indian subcontinent.Full Answer >
Acid rain is caused by the mixing of moisture in the atmosphere with sulfur dioxide and nitrous oxides, forming sulfuric acid and nitric acid in the precipitation that falls to the earth. In the Northern Hemisphere, the most common source of these chemicals in the atmosphere is air pollution from industry, generation of electricity and automobiles.Full Answer >
Convection currents are caused by an uneven temperature within something. Convection currents happen within the Earth's magma, water and air. It can happen in anything that is not solid and has parts that are cooler or warmer than other parts.Full Answer >
Heat energy comes to the Earth as sunlight and leaves in the form of infrared radiation, but greenhouses gases trap some of the radiation before it can escape the atmosphere again, leading to the "greenhouse effect." This gives the atmosphere a great deal of its ambient warmth. However, as greenhouse gases have increased their presence in the environment, the temperature of the Earth has risen as a result.Full Answer >