Why water can be said to be enormous in quantity, However it quality cannot be ascertained, discuss​

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

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Consider the directing effects of the substituents on salicylamide and predict the possible structures of the iodination products. which do you think will be the major product?