union

Introduction - We are already familiar with set theory and mathematical logic from earlier classes. It has already been seen that there is a similarity between the laws stated in set theory and the mathematical logic. The operations 'union', 'intersection' and 'complement' on sets are com..

In frog sexes are separate. Male and female frogs can be morphologically distinguished. The male frog have vocal cords which enable them to make a croaking noise to attract the females during the rainy, breeding season. The male reproductive system consists of a pair of testis that are attached to ..

These adaptations help the animals in climbing and are found in various animals like squirrels, lemurs, sloths and rodents. Chameleon Adaptation for Arboreal and Terrestrial Habitats andInsectivorous Mode of Feedi..

The is used before names of mountain ranges e.g., The Alps, The Andes, The Nilgiris, The Himalayas etc. The is not used before the names of mountains. Mount Abu, Mount K2, Nanda Devi, Mount Everest etc. The is not used before cities. Patna, Mumbai, Bangalore, Bhubaneswar etc..

The rational numbers can be expressed as terminating or recurring decimals. Numbers which are not rational are called irrational numbers . When expressed as decimals, they are non-terminating and non-recurring. We can obtain infinite number of irrationals between two irrational numb..

. While the mass of one atom of hydrogen is considered as 1 atomic mass unit, hydrogen gas in its natural state has 3 isotopes of atomic mass 1, 2 and 3 respectively. Thus average mass works out to be 1.008 a.m.u rather than 1 a.m.u. This in turn complicates the atomic masses of all other elements...

on OB and OC always to be equal. This means the locus of a point equidistant from two intersecting lines is the union of the pair of lines bisecting the angles formed by the given lin..

. The green chemistry programme is now a world wide effort of many governments, academia, scientific societies, industry, trade organizations, small business, non government organizations, research centers and other government agencies to promote the use of chemistry for pollution prevention throug..

Lastly, we come to the nature and wildlife enthusiasts who are not in any way dependent on the forests. Environmentalists and Nature Conservationists, NGOs like the World Wide Fund for Nature (WWF), Centre for Science and Environment (CSE), International Union for Conservation of Nature..

. The green chemistry programme is now a world wide effort of many governments, academia, scientific societies, industry, trade organizations, small business, non government organizations, research centers and other government agencies to promote the use of chemistry for pollution prevention throug..