<Li> Oceans--Overfishing </Li> <Li> Antibiotics--Antibiotic Resistance Mis - use of antibiotics anywhere in the world will eventually result in antibiotic resistance developing at an accelerated rate . The resulting antibiotic resistance has spread (and will likely continue to do so in the future) to other bacteria and other regions, hurting or destroying the Antibiotic Commons that is shared on a worldwide basis </Li> <Li> Publicly shared resources <Ul> <Li> Spam email degrades the usefulness of the email system and increases the cost for all users of the Internet while providing a benefit to only a tiny number of individuals . </Li> <Li> Vandalism and littering in public spaces such as parks, recreation areas, and public restrooms . </Li> <Li> Knowledge commons encompass immaterial and collectively owned goods in the information age . <Ul> <Li> Including, for example, source code and software documentation in software projects that can get "polluted" with messy code or inaccurate information . </Li> <Li> Skills acquisition and training, when all parties involved pass the buck on implementing it . </Li> </Ul> </Li> </Ul> </Li> <Ul> <Li> Spam email degrades the usefulness of the email system and increases the cost for all users of the Internet while providing a benefit to only a tiny number of individuals . </Li> <Li> Vandalism and littering in public spaces such as parks, recreation areas, and public restrooms . </Li> <Li> Knowledge commons encompass immaterial and collectively owned goods in the information age . <Ul> <Li> Including, for example, source code and software documentation in software projects that can get "polluted" with messy code or inaccurate information . </Li> <Li> Skills acquisition and training, when all parties involved pass the buck on implementing it . </Li> </Ul> </Li> </Ul>

When are invasive species considered a tragedy of the commons