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The earth's environment has been composed in a way which sustains life on this planet. Through on process, the different constituents of the atmosphere are consumed and through the other, these constituents are released into the atmosphere.
But due to industrial revolution, and speedy exploitation of natural resources, the composition of the atmosphere has been changed undesirably. In other words we have polluted the atmosphere.
Pollution is defined as undesirable change in physical, chemical or biological characteristic of are, land and water which is causing harmful effects on our life or that of other living organism and cultural assets. The undesirable or unwanted foreign species or matter causing pollution air, water soil or any segment of environment are called pollutants.
Q. What do you mean by Hemichordata ? Hemichordates re vermiform (worm-like) animals which have few characters like those of the chordates, hence the name hemichordata (hemi :
Selective Destruction - Wildlife The selective destruction of one species of an existing fauna can produce equally unfortunate results. The perfect demonstration of unexpected
Insect killing jar Secure a wide-mouth glass jar with a screw top or single which closes very tightly. Place a wad of cotton in the bottom and cover it with a round piece of ca
Mandibular Ramus Serves as an intraoral autogenous bone donor site. Cortical bone upto 4mm thickness may be harvested from the ramus. Harvest of bone from this area requires kn
What are secondary roots? In origin how secondary roots differentiate from shoots? Secondary roots are ramifications of the primary (major) root. The secondary roots emerge fro
WHY OBELIA IS OF SPECIAL INTEREST IN ZOOLOGY
Q. Why some trees lose their green color in the autumn? In autumn nights longer and days become shorter thus there is a reduction of the photosynthesis rate and some plants pre
Explain Pseudocoelomates in classification animal kingdom? In terms of body organization, Pseudocoelomates fall between the Acoelomates and the Coelomates. The body cavity in
Members belonging to different species refrain from mating because of the behavioural differences between them. Such behavioural differences usually centre around specific courtshi
A vanishing point is where parallel lines that move off into the distance seem to converge. It's an artifact of perspective. The vanishing point for any set of lines that are paral
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