It can big increase speed and change direction
Coal can disrupt life and air. Coal is a non reusable resource and it can make life harder. Coal can heat homes and power trains.
Think about skin cells. Skin cells shed every day, if cell division didn't take place, you would just constantly be losing skin cells.
The structure is named as Centromere to which the Two chromatids of the mitochondria are connected.
D I believe but im not sure