Today, _____ percent of the world’s energy supply comes from the burning of fossil fuels, such as coal, petroleum, and natural gas.
(1 point)
Responses
25
25
50
50
75
75
90
90
1 answer
75
(1 point)
Responses
25
25
50
50
75
75
90
90
1 answer
1 answer
1 answer
1 answer
1 answer