The reaction is showing hydrolysis. lysis means to break and hydro refers to the water molecule so the word hydrolysis means the water is breaking the bond.
The kilometer is the independent, since it stays the same, and the increasing his exercise time is the dependent since that’s what’s changing
A relatively small blood pressure gradient is generally insufficient to move blood through the veins under given conditions, thus venous return must be facilitated by valves within veins and two "pumps." ... As skeletal muscles contract, veins are squeezed to help propel the blood toward the heart.
Gray cannot blend. Dark rocks let black fur blend in. White sones can blend with white fur. Gray would stick out and then not survive. Population of black and white would go up, and then the gray would go down.
