IX: Use the words given in brackets to form a word that fits in the space. 81.Solar energy is renewable, ........and clean. PLENTY 82.We should reduce the use of ........at home. ELECTRIC 83.Waves will be used as an ......friendly source of energy. ENVIRONMENT 84.Solar power can be used to ........or cool our houses. HOT 85.There will be a .......of energy in the near future. SHORT 86.Scientists are looking for clean and .......sources of energy. EFFECT 87.More renewable energy sources will be used to solve the problem of..... .POLLUTE 88.........., fossil fuels are harmful to the environment FORTUNATE 89.The.......of wind turbines will be completed by next Friday INSTALL 90.........particles reach the Earth in just 8 minutes ENERGY