Question

Type the correct answer in the box. Spell the word correctly.

Answer 1

Billions of years ago, Earth's atmosphere lacked free oxygen.

Scientists call this a highly toxic atmosphere.

What kind of atmosphere was present on Earth in early times?

In the atmosphere of the primitive Earth there was no oxygen (O2) and nitrogen (N2), the air being composed of gases such as

• methane (CH4)
• ammonia (NH3)
• hydrogen (H2)
• and water vapors (H2O).

With this information, we can conclude that Early Earth's atmosphere may have been as toxic as that of Venus today. Earth is the only planet that harbors life (as far as we know)

Learn more about Early Earth's atmosphere in brainly.com/question/13154099

#SPJ1

Answer 2

The type of atmosphere present on the early ages of the Earth was, basically, made of gases expelled from vulcanoes.

What is atmosphere?

Atmosphere is the layer of air that surrounds our planet. Other planets in the solar system also have an atmosphere. The gases that make up the atmosphere are held around the Earth by the pull of gravity and follow its motion.

In the primitive atmosphere, there was no presence of gases such as oxygen. The abundant gases were methane, carbon dioxide, nitrogen and even gases composed of poisonous substances. It had high temperatures and had the Sun as the main source of energy.

See more about atmosphere at: brainly.com/question/28007493

#SPJ1