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Ecological Crises:
The natural atmosphere which man has inherited from the past, with healthy and fresh air, shielding from excessive radiation of the sun, has been deteriorating both under the impact of increased population and industrialization. Factories pump millions of tons of dust and smoke into the air, cars and buses spread fumes and stir up dust from the roads into the air, and sprays used to kill agricultural pests all combine to change the idealpicture. The pollution of the air has become a matter of great concern because it continues to increase as "civilization" spreads. Near big cities and heavily industrialized areas;the situation has become so bad that the birds have become rare, and the air is not fit for breathing. Rural areas are beginning to be affected. Society will have to move towards strict pollution control, and protection of the atmosphere as it is a great and irreplaceable resource for living.
Explain the Maintenance of Electrolyte Balance In the process of formation of urine, the kidneys also maintain electrolyte balance. Sodium is the most important cation that exi
what is atom
Explain why earthworms are said to be the most important soil animals. Earthworms ingest organic matter as well as soil where they mix, granulate and excrete to increase stabil
Determine about the soil humus The organic constituents (organic colloids) are due to mainly the plants and partly the animals. They form only a small fraction and get transfo
Personal sensitivity : There are other dangers from substances which are not so common. e.g. mutagens , but one aspect we have not mentioned involves you. The eyes, lungs and skin
Requirements Autoclave Microbial cultures - liquid/solid Disinfectant Spatula Disposable bags
Malnutrition and ill health: Are you familiar with the term malnutrition? Malnutrition means either lack of sufficient food or imbalance of nutrients in the diet, resulting in
What is the difference between a a characteristic and a property?
Question 1: a) Briefly explain the following terms: i) evaporation ii) condensation iii) transpiration b) Describe the hydrologic cycle. Question 2: a) Define an
Explain the Respiratory Centre The respiratory centre consists of two main parts - inspiratory centre and the expiratory centre. The inspiratory centre is dominant. A reciproca
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