Answer:
Rachel Carson's seminal 1962 book, Silent Spring, told the real-life story of how bird populations across the country were suffering as a result of the widespread application of the synthetic pesticide DDT (dichlorodiphenyltrichloroethane), which was being used widely to control mosquitoes and others insects.
When energy flows from one trophic level to the next trophic level most of the energy lost as heat in the process. (D)
The energy decreases by 10% every time you go up a trophic level.
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Answer:
(1) Nitrite poisoning
(2) Its cause is elevated levels of nitrite in the pond or culture system water.
