When did life originate on Earth?
1 Answer
Sep 30, 2016
See explanation.
Explanation:
Some scientific surmises;
First whiff of oxygen: 3.2 billion years ago (bya)
Unicellular life: 2 bya
Unicellular
Sea life: 650 million years ago (mya)
Leg-bearing worms:570 mya
Wattizea tree:380 mya
Animal movement from land to sea:400-365 mya
Insects:359-299 mya
Mini-winged dinosaurs:160 mya
Bates:50 mya
Anthropoid (resembling human )primate Ida (female): 47 mya
Indubitably, you and I: Now.:
