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Which of the following organisms have existed on Earth for the longest period of time? O single-celled organisms O multicellular organisms O dinosaurs O mammals

Which of the following organisms have existed on Earth for the longest period of time? O single-celled organisms O multicellular organisms O dinosaurs O mammals
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23 votes
Which of the following organisms have existed on Earth for the longest period of time?

O single-celled organisms
O multicellular organisms
O dinosaurs
O mammals

asked
User Killogre
by
8.0k points

2 Answers

9 votes

Answer:

cyanobacteria.. single celled organisms

answered
User Gionni
by
8.2k points
12 votes

Answer:

single-celled organisms

Step-by-step explanation:

answered
User Rexroxm
by
8.6k points
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