Question

6. What are the problems in using fuels such as coal and petroleum as sources
energy? How can these problems be solved?
holectricity? What force is used to generate hydroelectricity?​

Answer 1

the problem tat arises due to uses of fuels such as coal and petroleum is tat it creates pollution when it's burn and thus cause rise in co2 in the environment and cause a hazardous surrounding for people to live in ..

All these problems can be solved by using some alternative methods like uses of natural gas,for cooking. wind mill for electricity...etc..

the force of the wave tat is produced in the sea or ocean is use for generating hydroelectricity..