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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.
Explain about the Absorbed Moisture - water found in food? It is the moisture that has passed through cell walls and entered the cytoplasm of the cell. It is this form of water
CONJUG A TE D PROTEINS Besides being made of polypeptides, the conjugated proteins posses additional groups, metals or ions. Consists of protein and non-protein parts.
What are some industrial processes that use bacteria? Bacteria are used by industry in many ways. There are vaccines made of attenuated pathogenic bacteria or of antigens prese
Under which forms is the Trypanosoma cruzi found in its hosts? In the definitive hosts as well as in triatomine bugs (middle hosts) the protozoan that causes Chagas' disease ch
Autumn (fall) overturn In autumn or early winter the air temperature falls, resulting in the cooling of the surface waters. When the surface water cools to 4°C it becomes dens
Define the Effect of Wernicke korsakoff syndrome? Besides occurring in infants, beriberi also occurs in adults with high carbohydrate intakes (mainly from milled rice) and with
Q Which are the organs and characteristics of the digestive system of earthworms related to the kind of diet of these animals? Small organisms ingested together with soil parti
Explain the Laminar Flow Hood - Biological Safety Cabinet? It illustrates the laminar flow hood. As you can see, this biological safety cabinet contains HEPA (high efficiency p
who is the father of science
Q Lower Oesophageal Sphincter? Competency of LES (Lower Oesophageal Sphincter) is important. The pressure of this sphincter is controlled by many factors, one of which is hormo
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