WHY IS IT SO LONG GOD

Question 1

Hadean

Answer 1

• First Eon

- Solidifying of earths crust

Question 2

Archeozoic

Answer 2

• Second Eon
• First life forms evolve (single-celled organisms)
• Begins free oxygen in atmosphere

Question 3

Proterozoic

Answer 3

• Third Eon
• Multi-celled animals appear
• Supercontinent Rodinia

Question 4

Phanerozoic

Answer 4

• Current Eon

Question 5

Paleozoic

Answer 5

• Era before dinosaurs

Question 6

Mesozoic

Answer 6

• Era

- “The Age of Reptiles” (dinosaurs)

Question 7

Cenozoic

Answer 7

• Current Era

- “The Age of Mammals”

Question 8

Cambrian

Answer 8

• Period

- “The Age of Trilobites”

Question 9

Silurian

Answer 9

• Period

- First vascular plants (X + P)

Question 10

Devonian

Answer 10

• Period
• “The Age of Fishes”
• First tetrapods and amphibians appear

Question 11

Carboniferous

Answer 11

• Period

- Where most Fossil Fuels come from

Question 12

Permian

Answer 12

• Period
• PANGAEA
• Largest mass extinction

Question 13

Triassic

Answer 13

• Period

- First dinosaurs and mammals appear

Question 14

Jurassic

Answer 14

• Period

- First appearance of Archaeopteryx

Question 15

Cretaceous

Answer 15

• Period
• Lower: the heyday of dinosaurs
• Upper: mass extinction that ends all dinosaurs

Question 16

Quaternary

Answer 16

• Current Period

- “The Age of Man”

Question 17

Pleistocene

Answer 17

• Epoch
• The last ice age
• Mass extinction of large mammals and many birds

Question 18

Holocene

Answer 18

• Current Epoch

- Human civilization