air,water,and land
it won't
Sunlight is needed for the ecosystem to develop a more healthier or for say greener ecosystem.
light nutrient moisture age of plants photosynthetic pigment length of food chain energy input to the ecosystem
Each animal has a vital part in our ecosystem. The animal could be pray, or food, for another animal. The animal could be a predator, or a hunter, of other animals. Lets say that mice went extinct...