Give the correct form of words given to complete the sentence: Solar energy is renewable, ... and clean (plenty)

give the correct form of words given to complete the sentence
1. solar energy is renewable,..........and clean (plenty)
2. we should reduce the use of .............at home (electric)
3.waves will be used as an ..............energy (enviromment)
4. there will be a ..............of energy in the near future (shost)
5.solar power can be used................or cool our house (hot)
6. scientists are looking for clean and............cruriceofnergy (effect)