I think it is beneficial since they both benefit in some way from the relationship.
Answer:
Within your blood, red blood cells have a specialized task. ... Your blood then transports carbon dioxide back to the lungs where you can ... They extend like tree branches into the lung.
Explanation:
HOPE IT HELP'S! C:
<em><u>#</u></em><em><u>C</u></em><em><u>A</u></em><em><u>R</u></em><em><u>R</u></em><em><u>Y</u></em><em><u>O</u></em><em><u>N</u></em><em><u>L</u></em><em><u>E</u></em><em><u>A</u></em><em><u>R</u></em><em><u>N</u></em><em><u>I</u></em><em><u>N</u></em><em><u>G</u></em>
There are approx 100 billion
You are supposed to answer what happens in each phase of meiosis.