Question

Biogas is mixture of methane CH4 with........
a) 0.3% b) 0.14% c) 30 to 40%
d) 50 to 60%
​

Answer 1

Answer:

d is the answer

hope it helps

please mark me as the brainliest

Answer 2

Answer:

Biogas is a mixture of methane and carbon dioxide, produced by the breakdown of organic waste by bacteria without oxygen (anaerobic digestion).