Biogas mainly consists of -------------
Methane
butane
Ethane
None of these
Natural gas mainly consists of---------------------
Lignite
Anthracite
LPG is a ----------------- fuel
Gaseous fossil fuels
coal
Bio
---------------- was formed from trees or largeplants
Petroleum
Coal
natural gas
Light and heat energies from the sunlight are called ---------------------
Wind energy
Solar energy
Biomass energy
Solar cells
---------------- occurs deep inside the earth.
Natural gas
The practice of renewing a forest by planting a large number of seedlings is called --------------
deforestation
transpiration
afforestation
degradation
The combination of lithosphere, hydrosphere, atmosphere is called --------------
solar system
bio-mass
biosphere
Lithosphere
The renewable source of energy is ____________
Wind
Uranium
Which one is non renewable resources ?
Metals
limestone
all the above
