Imagine a timeline one meter long representing the history of the earth, with th

Question

Imagine a timeline one meter long representing the history of the earth, with the origin of the earth placed at 100 cm and the present day at 0 cm. Indicate the approximate placement of each of the following events in centimeters (cm) or millimeters (mm). For example, the first prokaryote cells appeared about 3.8 bya. Indicate at what cm or mm mark 3.8 bya would be placed on the one-meter timeline. Be sure to indicate whether you are answering in cm or mm for each event.

a) first prokaryote cells

b) production of atmospheric oxygen by cyanobacteria

c) first eukaryote cells

d) first multicellular organisms

e) first land plants

f) first vertebrates

g) largest extinction event

h) origin of mammals

i) extinction of dinosaurs

j) origin of Homo sapiens

Explanation / Answer

We know that the Age of earth = 4.543 billion years

So,

According to given data we can conclude that

4.543 Billion years = 100 cm

0.453 Billion years = 10 cm

Origin of first prokaryotes = 3.8 billion years ago.

note: you hadnt provided exact dates of remaining events, so i have provided according to best of my knowledge, please improvise according to your data. thanks

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