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Microbes:
You should know that invisible microbes are present everywhere, because they can surviveeven under very inhospitable conditions. They are all around us, in the air we breathe, in thsoil, in food, ih water used for drinking or bathing and on all the objects we come in contacwith. You will be surprised to know that billions of them live on the skin of our body and inour mouths and intestinal tracts. One third of the dry human faeces is bacteria. However, only some of these micro-organisms cause infectious diseases. There are many others whicare beneficial and their activities are of central importance to the biosphere. Without them life on earth would perish! Long before we even knew of their-existence, we have been taking advantage of their activities, as in the case of making curds, and alcohol or baking cakes and bread. They decompose dead plants and animals, as well as sewage into harmlesbut indispensable chemicals like nitrogen, oxygen and carbon dioxide etc. They can also bused as biological factories to produce antibiotics.
In fact, the famous antibiotic, penicillinwas discovered from a culture of fungus. Certain kinds of bacteria live in human intestinesand provide vitamin B,, and vitamin K. Thus, though some microbes are harmful, athers aof great service to humanity. While the knowledge of gems has grown and some of it is used to save people from disease and death, several countries have used this knowledge fodestruction and warfare. You may have heard the word "geim warfare". These countries have collected deadly gems which can be spread in enemy countries to pollute air or wateor even to destroy crops and forests. Such warfare, obviously, kills people, not just soldierand as such it is internationally prohibited.
Explain the Filiform papillae These are long and slender and are the smallest of the three types of papillae. They are found to be most numerous on the edges and anterior two t
What is necessary to restore the Marshall wetland in Margibi County, Liberia? The Marshall wetland has several features , including mangrove swamp, which is being degraded in some
the place of guidance and counselling in fostering stable growth and development in teaching and learning situation
Nuclear Reactor: Nuclear fission can be maintaned as a controlled cjiain reaction in a nuclear reactor to produce energy. Fermi had found from experiment that slower moving
Explain Immune System The animals and the human beings are forced to encounter many dangerous microbe in their day-to-day life, through water, air and food. Inside our body the
descibe the factors which decidethe broad area of scientific activity?
Name of the metamorphic rock: gneiss
How did it change from Mendeleev to Mosely?
What a molecule is, and the difference between molecules and compounds? A molecule is made up of two or more atoms combined chemically. The atoms can be of the same element, as
Immunoglobulin M - Classification of Antibodies Protects against bacteria, gives an early immune response, present on surface of lymphocytes. It stays confined to blood stream
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