Sex is a reproduction system involving both male and female to partake in sexual activity intercourse to create an offspring between the two beings creating a living organism
It might be an astrocyte, but I'm not sure.
Euglena move by a flagellum<span>, which is a long whip-like structure that acts like a little motor. The </span>flagellum<span> is located on the anterior (front) end, and twirls in such a way as to pull the cell through the water. It is attached at an inward pocket called the reservoir</span>
Greenhouse is due to excess of CO2 , Methane gas !! It has both benefits and demerits !!