It becomes gas. <span>Comets are objects composed mostly of ice and dust that grow tails when they approach the sun. All comets have a nucleus, which is the hard rock/ice object. When a comet nucleus nears the sun, solar energy begins to heat the ice and vaporize it.</span>
Four proteins have been obstructed in this investigation and the concentration of DNA synthesis was evaluated in various cell cultures and seeing which proteins could play a significant role in the cell cycle.
