Fossil fuels (coal, oil, natural gas) are the main source in many countries, but in some countries the use of alternative source of energy (wind and solar energy) are encouraged. To what extent do you think it is a positive or negative development?

Nowadays, fossil fuels are still primarily used

at

Change preposition

in

show examples

many places in the world.

However

,

this

tendency will change in the future because of the more and more application of

alternative

sources

such

as wind and solar energy. In my opinion,

this

is definitely a positive development. One of the reasons why we need

this

change is that fossil fuels are non-renewable,

that

Correct pronoun usage

which

show examples

means they will be

used-up

Correct your spelling

used up

show examples

someday.

Moreover

, they cause bad impacts

for

Change preposition

on

show examples

the environment and of course

human’s

Change noun form

human

show examples

health through the burning process

such

as many kinds of harmful gasses. As long as we continue to take energy from fossil fuels, these remain unpreventable.

On the other hand

,

alternative

sources have

a great deal of

Change the quantifier

a lot of

many

plenty of

show examples

merits. They are unlimited and can be found anywhere on the Earth, so humans can maintain their use even hundreds or thousands

years

Change preposition

of years

show examples

later. Especially, they are assumed to be environmentally friendly. If

alternative

resources become widely used, the environmental issues will decrease. In conclusion, I think it is time for us to switch to

alternative

resources which do not cause any problems for the environment and the living.