What does SPM in environment mean?
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The Great Smog of 1952 was a severe air-pollution event which affected _______.
Cannis Familiaris is the scientific name of
How many days moon takes to revolve around the earth?
The Moon takes about 27.3 days to perform one complete orbit around the Earth.
Which of the following is man-made fibre?
Earth revolves around Sun. Who was the 1st one to present this theory?
What is the name of the balloon – borne instrument set to be launch by NASA to study heavy cosmic particles?
What is the name of the eighth planet discovered by NASA, circling Kepler- 90?