Explicar cómo los aspectos bióticos y abióticos del medio ambiente pueden afectarse mutuamente

español-   Un factor biótico es un ser vivo que tiene un impacto en otra población de seres vivos o en el medio ambiente. Los factores abióticos hacen lo mismo, pero no son vivos. Juntos, los factores bióticos y abióticos forman un ecosistema. Para sobrevivir, los factores bióticos necesitan factores abióticos.

Explanation:

English-  A biotic factor is a living thing that has an impact on another population of living things or on the environment. Abiotic factors do the same thing, but they are non-living. Together, biotic and abiotic factors make up an ecosystem. To survive, biotic factors need abiotic factors.

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."