I don't get it it's kinda confusing
Explanation:
The early atmosphere was mainly carbon dioxide and water vapour. Water vapour condensed to form the oceans. Photosynthesis caused the amount of carbon dioxide to decrease and oxygen to increase.
It is false that the bronchial circulation is a component of the pulmonary circulation. Bronchial circulation is a separate system from the pulmonary circulation, and it supplies blood to the tissue of the larger airways of the lung.
<span>I found the exercise on the internet. Attached is a pic of the diagram.
Correct answer:
"All collisions between particles are perfectly elastic."
This is called elastic collision. Elastic collision is the </span><span>encounter between two molecules where the total </span>kinetic energy<span> of the molecules before the encounter is equal to their total kinetic energy after. The perfectly elastic collision it only happens, though, when the kinetic energy is not transformed into other forms of energy.</span>