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n4fiszzz
Era Oksigen Dengan menyebarnya daerah hutan di zaman ini, tingkat oksigen di atmosfer naik hingga 35%, dibandingkan dengan sekarang, yaitu hanya 21%. Bagaimana bisa, dengan jumlah pohon yang sama, namun tingkat oksigennya berbeda? Ini karena, pada zaman karbon, belum ada bakteri dekomposer, yang memakan bangkai kayu yang sudah mati. Selama proses pembusukan, sebenarnya bakteri tersebut melepaskan gas karbon dioksida. Itulah mengapa tingkat oksigen di atmosfer pada zaman karbon sangat tinggi. De...
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