２０２１年１月５日、「バイオエタノールで温室効果ガスが減るのか？」を修正。
修正前
石油からバイオエタノールへ変えたとしても、車が出す二酸化炭素の量は殆ど変わらず、エネルギー効率が悪かったり生成過程で下手すると増えるかも知れません。
修正後
石油からバイオエタノールへ変えたとしても、車が出す二酸化炭素の量は殆ど変わらず、現在排出している二酸化炭素が二酸化炭素吸収量を上回っているから、大気中の二酸化炭素が増えているわけです。
これまでも、バイオエタノールの元となる植物は育っていただろうし、エネルギー効率が悪かったり生成過程で排出される二酸化炭素により下手すると増えるかも知れません。
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