According to the distance of planets from the Sun, which of the following order is correct?
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What is the name of the balloon – borne instrument set to be launch by NASA to study heavy cosmic particles?
Which of the following is a tsunami warning sign?
In a food chain, what is the difference between primary consumers and secondary consumers?
Green House Effect' means
California - based private spaceflight company Space X has launched which secret mission for United States government?
__________ acts as a shield absorbing ultraviolet radiation from the sun.
What is the name of the most ancient spiral galaxy that existed 11 billion years ago?