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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.
heterotrophic nutrition in any 5 types of organism
Based on your understanding of the nitrate reductase and nitrite reductase tests, why would the inclusion of nitrite inhibit anaerobic growth?
What are seed gums? What are its characteristic properties? Seed gums are a group of polysaccharides with the following properties: light to dark cream colored amorphou
Phototherapy As you know exposure of the jaundiced infant to blue, white or green light is effective in reducing the serum billirubin level. When bilirubin absorbs light, ser
Bioclimatology: This is the study of effect of climate on distribution of organisms. Bioclimatology is the inter-disciplinary field of science which studies the interactions betwe
Q. Since neurotransmitters are not consumed in the synaptic process What are the mechanisms to reduce their concentrations in the synaptic cleft after they have been used?
what does the sperm cell fuses with?
Tantalum and Niobium in alloplastic implant materials Tantalum has been used successfully in needle type, screw- type and double-bladed implants. However, both are difficult
Insulin promotes fat synthesis and storage. Insulin transports fatty acids in the liver cells and then these are transported from the liver by blood to the adipose cells and are st
Locomotion in Mollusca The major locomotor organ in Mollusca is the foot, which is a characteristic feature of these animals. In its simplest form the foot is a flit ventral
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