Solar irradiance Changes in the sun’s energy output would cause the climate to change, since the sun is the fundamental source of energy that drives our climate system. Studies show that solar variability has played a role in past climate changes, a decrease in solar activity is thought to have triggered the Little Ice Age… Continue reading CAUSES OF CLIMATE CHANGE: Natural
Year: 2020
All about Greenhouse gases and Effect
Greenhouse Effect The greenhouse effect refers to the rise in the global average temperature of the earth. The greenhouse effect is a process that occurs when gases in Earth’s atmosphere trap the Sun’s heat. This process makes Earth much warmer than it would be without an atmosphere. The greenhouse effect is one of the things… Continue reading All about Greenhouse gases and Effect
Sea water pollution
Seawater Pollution: It is polluted mostly near the coast through the disposal of urban and industrial waste matters into the coastal waters. Causes Discharge of sewage, industrial effluents and toxic chemicals from urban areas and industrial establishment. Discharge of solid waste materials mainly plastics, microbeads, etc. According to UNEP, plastic accounts for 90% of all… Continue reading Sea water pollution
Surface (River) Water Pollution
Surface water includes river, lake and pond water but here only river water pollution is discussed as lake water pollution is discussed separately. Major River Water Pollutants: Sewage Wastes Infectious agents include germs and viruses which causes several types of diseases like typhoid, dysentery, cholera, etc. Plants nutrients and dissolved substances e.g. chemical fertilizers,… Continue reading Surface (River) Water Pollution
Water Pollution: Sources
Water Pollution refers to the deterioration of physical (such as color, odor, turbidity, taste, temperature), chemical (such as acidity, alkalinity, salinity, etc.), and biological (presence of bacteria, coliform MPN, algae, etc.) characteristics of water through natural and anthropogenic processes to such an extent that it becomes harmful to human beings, plants, and animal communities. SOURCES… Continue reading Water Pollution: Sources
EFFECTS OF AIR POLLUTION
Effects on Weather and Climate Air pollution changes our planet’s climate Some types cause global warming to speed up. Others cause global warming to slow down by creating a temporary cooling effect for a few days or weeks. Depletion of Ozone Chlorofluorocarbons attacked and destroyed the ozone layer, producing holes that would allow dangerous… Continue reading EFFECTS OF AIR POLLUTION
INDOOR AIR POLLUTION
Indoor Air Pollution-Meaning: If indoor air is contaminated by smoke, chemicals, smells, or particles. Unlike outdoor air pollution, the effect of indoor air pollution is health-related and less of an environmental issue. Causes: In colder regions, building and heating methods make use of airtight spaces, less ventilation, and energy-efficient heating. Sometimes synthetic building materials… Continue reading INDOOR AIR POLLUTION
Primary Air Pollutants
Primary Air pollutants POLLUTANTS SOURCES EFFECTS/IMPACTS Carbon Dioxide Natural Sources: Exhalation through organisms. Forest fires and volcanoes, hot springs and geysers It is freed from carbonate rocks by dissolution in water and acids. Carbon dioxide is soluble in water, it occurs naturally in groundwater, rivers and lakes, in ice caps and glaciers and also… Continue reading Primary Air Pollutants
AIR POLLUTION
According to the WHO, air pollution is defined as limited to situations in which the outdoor ambient atmosphere contains materials in concentration, which are harmful to the environment and his/her surrounding environment. The nature, dimensions, and magnitude of air pollution depends on a variety of factors such as residence time of pollutants in the atmosphere,… Continue reading AIR POLLUTION
Pollutants
A pollutant is defined as any form of energy or matter or action that causes a state of disequilibrium from the state of equilibrium in any existing natural ecosystem. Pollutants are those unnecessary materials that are barely degradable and cause harmful effects to the environment. TYPES OF POLLUTANTS On the basis of source of genesis… Continue reading Pollutants
