Question

Indiscriminate use of chemicals, pesticides and weedicides by humans are
polluting our water bodies, which in turn are harming the living
organisms. Study the flow chart and answer the questions based on it.
Large fish
Water
DDT 0.003 ppm)
Zooplankton
(DDT 0.04 ppm)
Small fish
(DDT 0.5 ppm)
(DDT 2 ppm
Fish-eating birds
(DDT 25 ppm
IV
V
III
I
II
(a)
Why does the concentration of DDT seem to be considerably high
in the top consumer ?
How would the organisms at the highest level be affected ?
Name the phenomenon observed.
(b)
(c)​

Answer 1

Answer:

Subject: Pesticides are supposed to complete their intended function without " any unreasonable risk to man or the environment ". Pesticides approval and registration are performed " taking into account the economic, social and environmental costs and benefits of the use of any pesticide ". The present book documents the various adverse impacts of pesticides usage: pollution, dietary intake and health effects such as birth defects, neurological disorders, cancer and hormone disruption. Risk assessment methods and the involvement of molecular modeling to the knowledge of pesticides are highlighted, too. The volume summarizes the expertise of leading specialists from all over the world.

Explanation:

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