ICSE Class 7 Physics Law of Conservation of Energy


Biogas is produced due to


_________ energy is obtained by inserting a pipe into a hole drilled into the rocks present below the Earth’s surface. 

Sources of Energy - Exam Decoded - 2

Define non-conventional sources of energy, solar, ocean, geothermal & nuclear energy. Green house effect, solar cooker, water heater, cell & OETC.