General Knowledge Ecology and Environment

ମିଥେନ ପରେ ବାୟୋଗ୍ୟାସର ମୂଖ୍ୟ ଉପାଦାନ କଣ?

1
ଅଙ୍ଗାରକାମ୍ଳ
2
ଅମ୍ଳଜାନ  
3
ହାଇଡ୍ରୋଜେନ 
4
ଆମୋନିଆ 

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