Explain “ Ozone layer “ and “Ozone Hole ”. 4 marks 2003

The ozone layer or ozone shield refers to a region of Earth’s stratosphere that absorbs most of the Sun’s ultraviolet (UV) radiation. It contains high concentrations of ozone (O3) relative to other parts of the atmosphere, although still very small relative to other gases in the stratosphere. The ozone “hole” is really a reduction in … Read more Explain “ Ozone layer “ and “Ozone Hole ”. 4 marks 2003

Festivals of Rajasthan

  Holi Diwali Bhai Dooj Rakhi Dushera Muharram Hadoti Festival, Kota Braj Festival, Bharatpur Desert Festival, Jaisalmer Summer Festival, Mt. Abu Marwar Festival, Jodhpur Camel Festival, Bikaner Gangaur Festival, Jaipur Teej Festival, Jaipur Mewar Festival, Udaipur

Demographic Scenario of the State and its impact on Rajasthan Economy.

  The productive capacity of an economy is directly linked to the size of its working – age population relative to its total population, it is essential to distinguish between the two components when exploring the impact of demographic change on economic performance. Census 2011 data shows the overall percentage of children in 0-6 year’s … Read more Demographic Scenario of the State and its impact on Rajasthan Economy.

ESTUARY ECOSYSTEM

  located where river meets the sea. the most productive water bodies in the world The complete salinity range from 0-35 ppt is seen from the head (river end) to the mouth (sea end) of an estuary Coastal lakes which have their connection with the sea through small openings are better known as lagoons or … Read more ESTUARY ECOSYSTEM

Niche

  Niche:- a  description  of  all  the  biological,  physical  and  chemical  factors  that  a  species needs to survive, stay healthy and reproduce. No two species have exact identical niches. Niche plays an important role in conservation of organisms. Types of Niche Habitat niche – where it lives Food niche – what is eats or decomposes … Read more Niche

Peasant Movements-

Three important peasant movements of the early twentieth century: Kisan Sabha and Eka movements in Avadh in UP Mappila rebellion in Malabar Bardoli Satyagrah in Gujarat The UP Kisan Sabha was set up in February 1918 through the efforts of Gauri Shankar Mishra and Indra Narain Dwivedi with the support of Madan Mohan Malviya. By … Read more Peasant Movements-

Thermodynamics

Thermodynamics Thermodynamics is a branch of physics which deals with the energy and work of a system.Thermodynamics is the study of macroscopic systems for which thermal effects are important. These systems are normally assumed to be at equilibrium, or at least, close to equilibrium. Systems at equilibrium are easier to study, both experimentally and theoretically, … Read more Thermodynamics

Soil Pollution

Soil Pollution is the Contamination of the soil by human and natural activities which may cause harmful effects on living beings. This may be due to the following factors. (i) Industrial wastes: Industries are the major causes for soil pollution Textiles, steel, paper, Cement, oil, dyeing and other industries are responsible for soil pollution. Toxic … Read more Soil Pollution

Basics of computers

Basics of Computers Computer is a device that transforms data into meaningful information. Data can be anything like marks obtained by you in various subjects. It can also be name, age, sex, weight, height, etc. of all the students in a class. A computer is a programmable machine. It allows the user to store all … Read more Basics of computers

SUCCESSION

  a universal process of directional change in vegetation, on an ecological time scale. occurs when a series of communities replace one another due to large scale destruction either natural or manmade. continously -one community replacing another community, until a stable, mature community develops. The first plant to colonise an area is called the pioneer … Read more SUCCESSION