The correct answer is Oxygen.
The surface of the Earth was liquefied. As the Earth cooled, an atmosphere generated primarily from gases erupted from volcanoes. It constituted methane, hydrogen sulfide, and ten to 200 times as much as carbon dioxide in comparison to today's atmosphere.
It was considered that there was an extreme volcanic activity for the initial billion years of the existence of the Earth. The initial atmosphere was possibly majority carbon dioxide will no or little concentration of oxygen. There were slight quantities of ammonia, water vapor, and methane.
Answer:
aerosol can affect your both of your lungs and heart
it can cause irritation on the airway Making it hard to breath.
Answer:
<em><u>B. 1 and 3</u></em>
Explanation:
The reason for this is because, they both have arm shapes. It doesn't have to be the exact same just a little similar because, common ancestors probably go way back.
Answer:
A cell wall is the answer.
