major subject areas

Major Ecosystems (Biomes) - Biome is a large, regional or sub continental biosystem characterized by a major vegetation type or other distinct landscape characters such as tropical deciduous forest, tundra biome, etc. "The major terrestrial ecosystems (largest ecologic..

Select the wrong statement(s). I. Two major branches of statistics are statistics and probability. II. A group of all subjects under study is called a population. III. Statistics is the science of conducting studies to collect, organize, summarize, analyze and draw conclusions f..

In no subject does measurement play as important a role as in science. Real science cannot exist without measurement. According to Lord Kelvin, one of the greatest scientists, unless you can measure what you are speaking about and express it in numbers you have not started 'Exact Science'..

The major problem that the atmosphere is being subjected to is pollution. In India, about 100 million tons of pollutants are being added to the atmosphere annually. This figure is likely to go up in future. Polluted air is harmful to man and the biosphere on the whole, as ..

I feel that these problems are not insurmountable. Our major task lies in the area of redesigning and creating a meaningful syllabus. The other area we would have to work in is the attitude of the teachers, parents and students. This calls for hard work from a team of..

Soil Pollution - Soil pollution refers to addition of solid and liquid wastes to soil creating imbalance in its natural composition and functions. Both in rural and urban areas, the soil is being subjected to incessant pollution. Because, it is being forced to receive the pollut..

Vitamin B 1 deficiency causes this disease. This water soluble vitamin is also called Thiamine or anti beri beri or antineuritic factor. Beri beri is common in areas where polished rice (dehusked rice) is the major food it..

Sewage that includes organic matter, animal and human excreta-one of the major pollutants of water in the urban and rural areas is the sewage. The sewage most often contains the organic matter that encourages the growth of microorganisms. These organisms besides spreading disea..

After having studied functions, limits and continuity in the previous chapter, we shall further divide the class of continuous functions into two sub classes, derivable and non-derivable.After having studied functions, limits and continuity in the previous chapter, we shall further divide the class..

Acid rain chemically strips waterways of necessary nutrients and lowers the pH to levels where plants and animals cannot live. Most of the aquatic animals cannot survive when the pH is less than 4. Some species of fish, such as salmon, die even when the pH is less than 5.5. Certain species of alga..