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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.
Nervous System of Asteroidea The nervous system of steroids is not ganglionated and is closely related with epidermis. It consists mainly of a circumoral nerve ring surroundin
Bud Dormancy - Plant Growth Substances Environmental Factors The most important factor inducing dormancy appears to be photoperiod. Short days induce dormancy in many w
what is the respiration interdisiplinary field,legal concerns,backgroun and ad vantages and diadvantages
What is a cytoskeleton? What are its main constituents in animal cells? Cytoskeleton is the cytoplasmic structure that handles the cell, keeps its shape and fixates and moves t
Q. Spoilage of butter? Butter, which has a high content of fat, is subject to rancidity and microbial spoilage due to contaminated cream from which it has been prepared
What is the distinction between interspecific competition and intraspecific competition? Interspecific competition takes place among organisms of the similar species. Intras
Q. What are examples of the economic and ecological importance of molluscs? Molluscs are important players in several food chains in ecosystems. Many marine molluscs are part o
What are taenias? What are the diseases caused by them? Taenias, also called as tapeworms, are platyhelminth animals (flatworms). The major diseases caused by taenias are taeni
Maturation and adaptation: (18 to 54 weeks) The final stage involves maturation and adaptation of the implant-bone interface, peri-implant bone and the entire implant supportin
Define the Indicators of Nutrition? We will begin our study on this topic by first understanding what we mean by an indicator. An indicator is a "specific and measurable statis
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