For each perfectly competitive firm in the long run
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__________ is defined as the output per unit of variable input
_____ are a group of chemicals that influence cell division and shoot formation.
Which of the following has open vascular system?
Select the missing number from the given responses.
In the following question, select the odd number from the given alternatives.
Who is/was the first U.S President to be impeached twice?
Black soil is also known by which of the following name ?