some of your causes might be acidic rain or natural wildfires that cause the parks to be degraded
hope this any more questions i am here plz mark brainliest
Horizontal gene transfer involves several mechanisms that can increase the genetic diversity of bacterial populations.
One of these mechanisms is bacterial conjugation in which a donor cell transfers genetic material to a recipient cell through a pili which function as a conduit.
Another mechanism of variability is through bacteriophages where genetic material is moved from one bacterium to another, this method is called transduction.