Geothermal energy
Coal
Natural Gas
Petroleum
The source of oxygen generated during photosynthesis is:
The spermatozoa contain an acrosome anteriorly, the function of which is
The stones formed in human kidney consist mostly of
The strongest force in nature is
The substance used to attract the gypsy moth is
The substance which does not expand on going from liquid state to solid state is
The substrate of photorespiration is
The sun is seen before the actual sunrise because of
The technique of calculating the age of fossil organisms is
The technique of collecting information about an object from a distance without making physical contact with it is
