Affinity of hemoglobin for CO is two hundred times more considerable than
Thousands of mirrors or curved metals are used to focus solar energy to make it very hot, in
Fossils fuel is an important source of energy for
Wind is beneficial resource of energy as it doesn't cause
Black painted panels which are hanged at roofs to trap heat and energy from sun, are
When animals and plants are rotten in absence of air, there produces a gas called
Plants material and waste from living things are regarded as
Trapped heat inside earth is known as
Bio gas is a renewable source of
Burning of fossils fuel is leading environment towards
Energy resources which would not run out are called
Products which are helpful in harnessing solar energy, are
Oil tankers are now built with double hulls instead of one to avoid