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Q. What are persistent organic pollutants (POPs)?
The POPs, or persistent organic pollutants, are toxic substances formed from organic compounds. The POPs are made in several industrial processes, like the production of PVC, paper whitened by chlorine, herbicides, insecticides and fungicides, and as well in the incineration of waste. Instances of POPs are dioxins, furanes, heptachloride, chlordane, DDT, dieldrin, toxaphen and hexachlorbenzene.
The POPs are highly harmful and toxic since, like the heavy metals, they are bioaccumulative, that is they are not degraded by the body and accumulate even more in each following trophic level of the food chains. In humans the POPs can cause nervous and cancer, immune and reproductive impairments.
The Y chromosome (for males) is less protective against hereditary diseases than the X chromosome. Why then are women considered the weaker sex?
what is the process of cell cycle?
steps in urine formation and the organs/tissues involve in such process?
Name the source gland of leutinising hormone (LH). State the other hormone along with which it acts on its target cells/organ. Give their two functions.
What is mechanical digestion? In molluscs, arthropods, earthworms, birds and vertebrates, in general, which organs respectively participate in this type of digestion? Mechanica
Xerarch - Kinds of Succession When the succession takes place in drier area, i.e., the succession progresses from xeric to mesic conditions. It is further subdivided as:
Full - thickness flap with a c-shaped excisional incision In case where there is adequate soft tissue, both in terms of papillary height and labial bulk, the excision of the ep
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Which part of the carbon cycle is responsible for the enhancing concentration of carbon dioxide in the atmosphere. The burning of fossilized products (coal and oil) of some pla
Q. PH of food in pectic ulcer? PH of food: It has. a little therapeutic importance except for patients with lesions in the mouth or oesophagus. Most foods are considerably les
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