Name the structure responsible for gaseous exchange in the following organisms:- •fish
•prawn
•frog
•Earthworms
•leech​

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Opinion polls reveal that many people believe that the military buildup of the 1980s came at the expense of pressing domestic problems such as environmental pollution and deteriorating educational and transportation infrastructure. in short, people are becoming aware of

Wich characteristics make the long ballot ineffective

Why is it necessary to obey social norms? write briefly.