Biology, 02.08.2019 00:30 ptrlvn01

20 pts! place the following events in chronological order: a. the first cells appeared that could make their own food from sunlight. b. the ozone layer was formed. c. simple chemicals reacted to form new molecules. d. animals appeared. e. the first organisms appeared. f. humans appeared. g. the earth formed.

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20 pts! place the following events in chronological order: a. the first cells appeared that could...