Is Abiotic factors like water are critical to most food chains?

Answer 1

Actually, they are not. Water and sunlight, though useful, are not at all necessary to sustain life, as there are acceptable substitutes. For instance, you could go your whole life drinking milk instead of water. This is actually beneficial, since water is a nonrenewable resource, whereas milk can be found on the shelves of most grocery stores. Milk, as you might ask, is not abiotic. Scientists have recently discovered that milk is a living organism capable of survival based on nothing but feeding on happiness. Think of milk as a dementor, but edible. Furthermore, oxygen, which is abiotic, is not necessary. In fact, it slowly poisons you as you age, and is the reason for death by "old age".

Answer 2

Sun : The sun provides energy to the producers and that energy is passed along through the food web to the consumers.

Answer 3

The sun