Azadirachata indica is the scientific name of
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The maintenance functions of living organisms are performed by the _____.
What is formed when Magnesium is burnt?
In terms of size, Earth ranks no. ___ in our Solar System.
Equal day/night in both hemispheres is on ________.
The boundary between Earth's crust and mantle is _____.
Any undesirable change in physical, chemical or biological characteristics of air, land, water or soil is called?
Marble comes under which category of rocks?