Explain how water can be an abiotic environmental factor when it is essential to all life on earth.

Abiotic factors are important to all organisms, because they make photosynthesis happen which is needed for plants to live to make oxygen, and oxygen is needed for humans to live. Water can easily be called the lifeblood of Earth. All living beings, whether they are animals or plants, need a definite percentage of water present in their body to remain healthy.

What is the question? if you were looking to design a method of separating something, you can separate this compound by putting both in water and allowing the water to dissolve the sugar. then pour it into another beaker and evaporate it then boom! salt and sugar : ) 

In some developing nations the percentage of the animal protein from fish in the diet can be as high as 25 percent.  about 85% of fish caught is used for human consumption.  the remainder is converted into fishmeal and fish oil.