Specialized cells perform specialized functions in multicellular organisms.
activities of living organisms (animals, burrows, plant roots), pressure from overlying load/materials and atmospheric conditions.
The centrioles help in the information of the spindle fibers that separate the chromosomes during cell division.
If one population, such as lets say a hawk decreases the niche, or the importance of an animal or its effect in the ecosystem, on the mice. the mice population increases. or it can be lets say plants and bugs, the lady bug goes away and the other bugs eat the plant
