Fill in the blanks....1) Example of persistent pollution is _________2) Depletion of ozone layer in the atmosphere is due to _________3) By _________ technology we can get many calve if superior breed in short time.answers correctly if anyone know...
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1) Aldrin2) Depletion of ozone layer in the atmosphere is due to the release of chemical compounds containing gaseous chlorine or bromine from industry and other human activities.3) embryo transfer technology
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