There are various uses of Solar Energy. Farmers in Traditional Farming Communities used to solarise fields by living them empty after a deep ploughing during summers. It killed insects and pests. Human skin synthesizes vitamin-D when exposed to sunlight for short durations. Mothers used to make their babies sleep in the sun after oiling their bodies during winters in order to keep them healthy and strong.
Substances that cause pollution of air are called as air- pollutants or atmospheric pollutants. These are fine Primary Pollutants that contribute more than 90 percent of global air pollution. These fine pollutants are carbon monoxide (CO); Nitrogen oxides (NOx); Sulphur oxides (Sox) and particulates. These pollutants can be put into two broad categories A. Gaseous Pollutants, and B. Particulates.
Earlier women had to do most of the work in household. But, the trend is changing now. Both men and women have to do all the work now. The Inequality at the work place is vanishing now.
Land resources are used for a variety of purposes which may include organic agriculture, reforestation, water resource management and eco-tourism projects. In all these areas land use is needed to be sustainable.
Mixing of different types of substances in soil- which affects its natural qualities, and reduces its fertility- is called as soil pollution. Some environmentalists define soil pollution as – build-up of toxic chemical compounds, salts, pathogens or radioactive materials in soil that can affect plant and animal life adversely, is called as soil pollution.
All those processes that maintain the body of an organism collectively are called as life processes.
Ecosystems can be categorised into two broad categories: natural and artificial. Natural Ecosystems are those ecosystems that operate by themselves under natural conditions. These ecosystems are further categorized as Terrestrial and Aquatic Ecosystems. Terrestrial ecosystems relate to lands, whereas Aquatic ecosystems relate to fresh or marine water. Freshwater ecosystems may be Lotic or Lentic. Lotic are running water ecosystems like springs, streams or rivers, whereas Lentic Fresh Water Ecosystems may be found in standing waters of lakes, ponds, pools, puddles, ditches, swamps, etc. Marine Ecosystems are found in marine waters of salt lakes, seas, oceans and estuaries. Artificial Ecosystems are man-engineered ecosystems like crop fields, artificial ponds and lakes, aquaria, fish ponds, and abandoned mines reclaimed as lakes or water bodies for recreation.
Urban areas are usually densely populated locations. People migrating from villages towards cities further increase the population burden of cities. Thus urban areas are suffering from serious congestion and traffic problems. Here is a case of Ranchi.
Yes, 24th January is the memory day of Dr. Homi Jahangir Bhabha. He was died in a plane accident. Though it was an accident people have different opinions about it. He is called as the Father of India’s Atomic Programme. It is accepted that India would have been a country of Atomic Power if Dr. Bhabha had lived the accident. His death was considered as suspicious
Most of us have seen owls in our surroundings. Owls are hard to be seen in natural settings because they usually remain active during nights only.
The whole world is worried due to the new variant of corona Omicron. The era of lockdowns has again started because Omicron is seen as more deadly variant. WHO has declared that it disseminates faster and is more dangerous. Everyone has been warned to strengthen securities.
