Transcript of Heart Disease and the Excretory System. Heart Disease and the excretory Heart disease slows the oxygen flowing throughout the body. So oxygen moves slower to the excretory system.
The most likely causes of a shift in pH are: 1  Something in the water source buffering the water. 2  Something in the tank buffering the water. 3  or Something you are adding to the tank.
Chemical factors of water. Various chemicals present in water, the acidity and alkalinity of water, salinity, pH levels and dissolved substances can influence chemical reactions in water and can affect your productivity. Below are a few chemical factors that affect your freshwater fish farm.