27-09-2022
Chemistry

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HELP PLEASE

It marks the beginning of photosynthesis.
Appearance of first reptiles.
Evolution of Homo erectus and Homo sapiens
Known as the age of mammals.
Mass extinction of dinosaurs. (Ignore the boxes in the image attached)

HELP PLEASE It marks the beginning of photosynthesis Appearance of first reptiles Evolution of Homo erectus and Homo sapiens Known as the age of mammals Mass ex class=

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