How do human effect natural selection?

if this is about  climate change then here you go If climate change is caused by humans, then no organisms can avoid selection resulting from human actions. ... A well-known example of natural selection in action is the development of antibiotic resistance in microorganisms. Tricky. Humans created the selective force (antibiotics) and applied them to microorganisms

yes by elenaboo   it could cause lots of stuff

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides