Pre-Cambrian
Progress
Ancient Life
(ARCHEAN)
Proterozoic
Progress
Mystery
Events
True or
False
100

4 composition of Atmospheric development.

CO2, water vapor, methane, and ammonia

100

What created first as the Earth cooled and water vapor condensed?

First oceans possibly began

100

What evolved from accelerating biological complexity?

Sexual Reproduction Evolved

100

soft-bodied life such as those from what period?

Ediacaran period

100

Ocean forms in Hadean eon.

True

200

Why is it Crucial for tracing the evolution of life?

Understanding life's origins

200

What cause Earth's surface covered with molten rock?

Extreme Heat and Volcanic Activity

200

Formation of the first stable continents. What is it called?

Cratons

200

What are the First life appeared on earth?

bacteria and archaea

200

Fungi evolved in Archean eon

False

M
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