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There are two main sources of pollution:
(1). Natural Sources:
(a) Volcanic ash
(b) Marsh gas (CH4) released from decay of organic matter.
(c) Dust from dust storm.
(d) Pollengrains, spors, bacteria, cysts etc.
(2). Anthropogenic sources:
Man has aggravated the problem of pollution by his innumerable activities like.
(a) Industrialization
(b) Revolution in automobile industry
(c) Deforestation
(d) Nuclear explosion
(e) Over exploitation of natural resources.
What is an ecosystem? An ecosystem is the system that composed of biotic and abiotic factors in interaction.
Flower - Plant Growth Substances Floral initiation is a dramatic event involving a total changeover of the character and developmental pattern of the meristem. The stimulus ca
HISTORY OF THE CELL Term "Cytology" was given by Hertwig , he also wrote a book on " Cell and Tissue ". Father of cytology = Robert Hooke. Father of Modern cytology
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
#quesWhat benefits can commensalism offer to a species..
Explain Adverse Effects of Caspofungin Although generally well tolerated, caspofungin occasionally causes rash, fever and mild hepatic toxicity (Medical Letter 2001; 43:58). An
If you observe symptoms of overall wilting, stunting, and thinning of the leaves, would you expect a foliar or root disease? Why?
A species has a diploid chromosome number of 56. Is it true or false that of the 28 chromosomes in an ovum, 14 are always paternal? Ignore the effects of crossing over. Justify you
Explain the technology in which transgenic plant was constructed in which seeds that will produce plants for a single crop.
explain spermatogenesis
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