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Pollution - Environmental Pollution
Pollution refers to any undesirable change in the physical, chemical or biological characteristics of our environment, i.e. air, water and oil that may or will adversely affect humans or other species and life support systems of our biosphere directly or indirectly. A substance whose introduction into a resource damages the latter's usefulness is called a pollutant. Pollutants are grouped into two broad categories:
The non-biodegradable pollutants such as heavy metals, pesticides, move through the food chain and may get magnified to dangerous levels in higher trophic level organisms. Some of these combine with other compounds and produce toxic substances. However, biodegradable materials such as human and animal wastes, agro-based residues and fertilisers can also pose a threat if their quantities or inputs exceed the Assimilative capacity of the environment.
Vivipary - Development Biology In flowering plants the seed or fruit generally is dispersed and germination occurs when the conditions are congenial for growth. However, in so
Q. What are the types of nutrients? Explain the functions of nutrients? Types of nutrients • Carbohydrates • Proteins • Fats • Minerals • Vitamins • Water Fu
To show the respiration of a plant Place the plant in a test tube held in a weighted wooden block. Put this in a bowl having lime water and cover the plant with a jar. Keep the
Determine Energy Density of Human Milk? The energy density of human milk depends on the relative proportions of protein, fat and the principal carbohydrate, lactose. Lactose co
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Causes of Air Pollution We known about the composition of atmosphere, its major and minor constituents. The composition of atmosphere has remained the same for thousands of y
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Q What are the few examples of beings of the phylum Arthropoda that present a high level of behavioral sophistication? Insects like some species of wasps, bees, termites and an
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Q. Counselling at Diagnosis? A newly diagnosed case of diabetes will have lots of questions and will be confused regarding the treatment and complications of the diabetes. It i
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