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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.
Ac ute heart failure The acute heart failure is characterized by sudden loss of consciousness and falling with or without convulsions. The mucous membranes become pale followe
Modification of Food Starches Positive attributes of starches can be greatly improved and/or negative characteristics diminished by slight and relatively simple modifications.
Explain the Digestibility Coefficient? You have earlier learnt that dietary proteins are hydrolyzed to amino acids during digestion. The digestion begins in the stomach by the
Subphylum Uniramia Uniramia, the largest subphylum of phylum Arthropods includes myriapods and insects. Due to the unbranched nature of the appendages of its members, the sub
Theories are import because they can be used to a. Test research hypothesis b. Develop questions which will facilitate more effective research c. Conduct more meaningful and useful
Hypothermia As the blood passes through the oxygenator, hypothermia machine allows the blood to cool to the required temperature. Generally, the temperature is brought dow
Glycogen synthase exists in two forms: the phosphorylated form designated as 'D' form is the inactive one and the dephoshorylated form designated as 'I' form is the activ
The allele that causes albinism (p) is recessive to the allele for normal pigmentation (P). A normal woman whose father is an albino marries an albino man whose parents are both no
Neural Basis of Responses to Sex Pheromones The ability of insects to detect and discriminate between a variety of pheromones with great sensitivity depends on the presence of
What are mutagenic agents? The Mutagenic agents, or mutagens, are physical, chemical or biological factors that can cause alteration in DNA molecules. Instances of believed
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