geological + evolution

Question 1

Atmosphere and oceans form
Oldest rocks form as earth cools

Answer 1

Hadean Eon

Question 2

• Photosynthesizing Cyanobacteria appear
• first unicellular life appear

Answer 2

Archean

Question 3

First soft-bodied animals appear
First multicellular life appear

Answer 3

Proterozoic Eon

Question 4

End Botomian extinction event
First fungi appear
Trilobites are dominant

Answer 4

Cambrian

Question 5

First vertebrates appear

Answer 5

Ordovician

Question 6

First land plants appear
First jawed fishes appear
First insects appear

Answer 6

Silurian

Question 7

first land animals appear
first amphibians appear

Answer 7

Devonian

Question 8

First reptiles apear
First large cartilaginous fishes appear

Answer 8

Carboniferous

Question 9

Triassic extinction event
Pangaea forms

Answer 9

Permian

Question 10

Pangaea cracks
First mammaIs appear
Reptiles are dominant

Answer 10

Triassic

Question 11

First Birds appear
Pangaea splits
Dinosaurs are dominant

Answer 11

Jurassic

Question 12

K-T extinction event
Earth looks closer to present-day
Flowering plants appear

Answer 12

Cretaceous

Question 13

First large mammals appear

Answer 13

Paleocene

Question 14

Eocene - Oligocene extinction event

Answer 14

Eocene

Question 15

Mammals are dominant

Answer 15

Oligocene

Question 16

Grass becomes widespread

Answer 16

Miocene

Question 17

Hominids appear

Answer 17

Pliocene

Question 18

Earliest Humans appear
Ice age begins

Answer 18

Pleistocene

Question 19

Ice Age ends
Humans are dominant

Answer 19

Holocene