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ss7ja [257]
2 years ago
7

During the carboniferous period, forests consisting mainly of __________ produced vast quantities of organic matter, which was b

uried and later became coal.
Biology
1 answer:
andre [41]2 years ago
6 0
Forests consisted mainly of ferns

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When the biologist observed the shortage of the dissolved oxygen and increase in the level of dissolved carbon dioxide, this could be the result of the failure of the circulatory system which supplies these gases on the body and the associated respiratory system which helps in the exchange of these gases with the atmosphere.

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