Glial cells<span> of the (a) central nervous system include oligodendrocytes, astrocytes, ependymal </span>cells<span>, and microglial </span>cells<span>. Oligodendrocytes form the myelin sheath around axons.</span>
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>
I believe that it’s unconscious since it’s not something you require to be aware of so therefor the answer should be D.
