Animal body parts and sense organs
Most animals of the same kind have same body parts. But their body parts differ in size, shape, colour and functions.
humans
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Positive and Negative Interdependence among Organisms in Ecosystems
Interdependence between two species through which individuals of either one or both species benefit is called positive interdependence. The benefits to the individual of any species through this relationship may be continuous or transitory, obligate or facultative. Both partners in this type of relationship may be in close contact; one may be inside some specific area or attached to the surface of the other’s body. Positive interdependence is divided into three major types: mutualism, Commensalism, and proto-cooperation.
Biodiversity and Importance of Biodiversity
Biodiversity sources and also other sources supply raw materials to many important industries.
They have aesthetic value and an appeal for ecotourism, which supports the growth of the national economy. They are also potential sources of pharmaceuticals, other chemicals, agricultural materials, etc.
Pharmaceutical products of biodiversity origin offer important medicines to our healthcare systems and prepare a background for many social services. Besides these, biodiversity offers various ecosystem services as each of the numerous species of animals and plants depends on other animals or plants for survival, breeding, and development.
Types of Ecosystems – Terrestrial and Aquatic
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.
Dayan Superstition in Jharkhand – Even Law fails to control
Dayan system is a traditional bad practice and superstition in Jharkhand. If we compare this system with other states we see that it is graver in Jharkhand. In this state more than 1231 women are declared as Dayan per year. After being declared as Dayan these women are differently tortured and pained sometimes up to death.
The Limit of Tolerance of Environment
We have been hearing about environmental pollution, loss of biodiversity, energy crisis, and the sustainable environment since long. So many things have already been infused in school syllabi as well. But how many of us really apply in our real life the things about which we have read in our classes?
The Valentine’s Day and The Valentine’s Week
I did not know about the Valentine’s Day or the Valentine’s Week even till I was married. I don’t know either when I knew about it.
United Nations System
On June 26, 1945 fifty-one; nations representing 80% of the world’s population approved and signed a charter for the establishment of a world body of nations – the United Nations Organisation (UNO); at San Francisco.
Conservation of Wildlife
Conservation of species in their natural habitats- in areas where they occur under normal conditions is called in-situ conservation.
This type of conservation strategy protects the entire area. Such an area is protected and maintained to conserve all the known or unknown species inhabiting it.
In this type of conservation, species are not isolated or provided with health care, food, or mating facilities. Only factors detrimental to species’ existence and development are eliminated in this conservation strategy. Human interference, such as hunting, cutting down trees, collecting firewood, etc., is completely banned in such areas.
Inheritance of Genetic Characters
Parental traits are transferred from one generation to other generation by means of chromosomes, DNA, or Genes.
