Which of the following technique is used to know the age of a tree in years?
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Which planet is the nearest in size to Earth?
What did Edward Jenner pioneer?
Which one of the following is the largest source of natural energy to humans?
Which is the smallest planet in our solar system?
One of four words is a class to which the other three belong. Identify the class.
Which of the following statement is true?
WHICH OF THE FOLLOWING IS not A RENEWABLE SOURCE OF ENERGY?