The Birth of Earth!

Front

What percentage of Earth's history is made up of the Precambrian time?

Back

88%

Front

Where did life originally form on Earth?

Back

Oceans

Front

During the Precambrian age, which type of organism dominated?

Back

Prokaryotes

Front

How old are the oldest known fossils?

Back

3.5 billion years old

Front

What event formed the original ancient atmosphere of Earth?

Back

Outgassing by volcanoes

Front

What are prokaryotes?

Back

Single-celled organisms that lack a nucleus, such as bacteria.

Front

What is the significance of the Precambrian time in Earth's history?

Back

It accounts for about 88% of Earth's geological history and includes the formation of the Earth and the earliest life forms.

Front

What is outgassing?

Back

The release of gases from the Earth's interior, which contributed to the formation of the atmosphere.

Front

What are eukaryotes?

Back

Organisms whose cells have a nucleus, including plants, animals, and fungi.

Front

What role did photosynthesis play in Earth's history?

Back

It produced oxygen, which transformed the atmosphere and allowed for the evolution of aerobic life.