Autoimmune Disease Genetics. 1  1Division of Rheumatology and Department of Immunology, Mayo Clinic, 200 1st Street SW, Guggenheim Building 3-42, Rochester, MN 55905, USA. 2  2Laboratory of Molecular Medicine and Human Genetics, Department of Medicine, University of Crete, Heraklion, Greece.
Sunlight, soil, water, and pollution, for example, are all important abiotic factors of an environment that affect life. The biotic environment, on the other hand, is composed of all the living organisms in an ecosystem, and includes factors such as disease, predators, prey, and human activity.
First, let's review biotic and abiotic factors. Biotic factors are living organisms, an example would be a deer. Abiotic factors are non-living objects, an example would be the air. Population - All the members of one species that live in a defined area. Community - All the different species that live together in an area. Ecosystem - All the living and non-living components of an area. Here is a video to help with this concept.