why does distilled water not conduct electricity whereas rainwater does
why is variation beneficial to the species but not necessarily for the individual
give reason why copper is used to make hot water tanks and not steel
why was he amused by this idea
give any two ways in which biodegradable substances would affect the environment
from which novel was the name anushilan samiti adopted
from where earthquake waves are generated
why do we need resource planning
why do we prefer a convex mirror as a rear view mirror in vehicles
from where did the peddler get the idea of the world being a rattrap