The association of animals in which both the partners are benefitted is known as
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Polycot is a mixture of which among the following?
What is the source of natural energy of the hot springs at Manikaran in Himachal Pradesh ?
Helium is added to the oxygen supply of deep sea divers because it is _________
Which is the warmest layer of the atmosphere?
Which of the following was India's first interplanetary mission?
Wheat is a ______.
What is the accepted average Calorie requirement for rural area in India?