Caldo primigenio

The video explores the origin of life on Earth, which began around 4000 million years ago. It describes the composition of early oceans, which contained high levels of compounds like ammonia, carbon dioxide, and hydrogen sulfide. These compounds, combined with gases from the early atmosphere such as methane and hydrogen, led to the formation of simple organic molecules, laying the foundation for the first life forms.

Approximately how many million years ago did the first form of life on Earth originate?

• 3000 million years ago

• 4000 million years ago

• 5000 million years ago

• 6000 million years ago

Which of the following compounds was NOT mentioned as being present in early oceans?

• Hydrogen sulfide

• Oxygen

• Carbon dioxide

• Ammonia

What was the temperature condition of the early oceans?

• Moderate

• Elevated

• Freezing

• Cold

Which gases from the early atmosphere could have combined with ocean compounds to form simple organic molecules?

• Neon and krypton

• Argon and helium

• Methane and hydrogen

• Oxygen and nitrogen

What was the significance of the simple organic molecules formed in early Earth conditions?

• They were used for energy production

• They were the basis of the first life forms

• They caused the extinction of early species

• They led to the formation of rocks