Answer:
ok
Explanation:
If you don't know why then you are sus
Answer:
C. Arteries carry oxygenated blood, while veins carry blood low in oxygen
Explanation:
Hi !
<em>Name the 3 pollutants that have decreased the most since the 1990</em>
Answer:
<em>- lead, </em>
<em>- sulfur dioxide (SO2) </em>
<em>- oxides of nitrogen (NOx).</em>
