The correct answer is C. This part is called the epithelium.
It is the muscular coat which consists of inner circular and outer longitudinal smooth muscle. Its main work is peristalsis.
To propel urine. The outer layer is the mucosa which has transitional epithelium that continuos with the lining of the renal pelvis and also the urinary bladder.
This layer of its work is to secrete mucus which protects and coats the surface of the cells.
As the water freezes, the sugar chemicals and water begin to depart. The water molecules start to get closer and closer together, separating and pushing the sugar crystals to the top. This causes the sugar to depart from the water.
Hope that helps! -UnicornFudge aka Nadia
It is called a sperm cell
The wander is C, since mutation can cause natural selection m, by introducing new traits.
