<P> Humans make the most sudden and long - term changes in an environment (e.g. pollution and waste). These changes either drive species out of their territory or force them to adapt to their new surroundings . These changes have the largest impact on an ecosystems population size, typically causing a serious decrease . </P> <P> Biotic components are the living things that shape an ecosystem . Examples of biotic components include animals, plants, fungi, and bacteria . Abiotic components are non-living components that influence an ecosystem . Examples of abiotic factors are temperature, air currents, and minerals . </P> <P> The factors mentioned above may either cause an increase or decrease in population size pending on the organism and ecosystem in question . </P>

Explain in details ten types of chemical reactions found in biotic