The low vapor pressure of water preventing bodies of water from dying out.
Fluorine is the most active chemical element, reacting with virtually every element. It even reacts with the noble gases at high temperatures and pressures. The noble gases, or Group 18 (VIIIA), also known as the inert gases, generally do not react with other elements.
Explanation:
A homogenous mixture is uniform and thus hard to recognize as a mixture. An example is water.