What marks the onset of puberty in females?
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In a centrally planned economy, the ____________ plans all the important activities in the economy.
If for a perfectly competitive firm, price is Rs 7.2, output is 4500 units, average variable costs are Rs 1.2, and average total costs are Rs 4. The firm's profits are equal to
Which of the following is added to iron to make iron hard and strong?
NaCl is a salt which is made up of
The number of valence electrons in an atom of Phosphorous is
____ is not an endocrine gland in humans.
___ is the liquid part of the blood of which 92% is water and the remaining 8% is proteins, minerals, hormones, enzymes and so on.