HELP ME WITH BIOLOGY YALL!! Whichever is the right answer, please explain why. The hint of this question says: The term biodiversity is often used to describe all the features of an ecosystem that, if lost, would diminish the quality of the ecosystem.

It's the last one

Explanation:

All of the other answers mention how the different features either interact with each other or only mention one of the species in an ecosystem, whereas biodiversity isn't about how the species interact or evolve in their habitats but purely the amount of different species that are living in the ecosystem. Hope this helps <3

"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."

the answer would be   10%