Answer :
Answer:
1, Coal,oil,natural gas,petroleum ...etc
2, -they pollute the environment
-In case of irresponsible use ,they can be
dangerous
-it is more reliable an renewable
Answer:
1, Coal,oil,natural gas,petroleum ...etc
2, -they pollute the environment
-In case of irresponsible use ,they can be
dangerous
-it is more reliable an renewable