We know Earth was created to be a loving nest for humanity, initially free of noxious species of plants and animals. We know that all or perhaps nearly all such species are imports. That said, while humanity retains a great deal of its divine heritage, it is, in fact, not perfect. It is conceivable that humanity has performed collective karmic transgressions that might be best met with the creation and introduction of some form of noxious plant or animal species. Is there even a single example of that happening? If not, could some of the explanation be that we have simply not been around long enough (just two hundred thousand years or so) to warrant a unique species response to a karmic dilemma?

Yours is an interesting hypothesis but is, unfortunately, largely incorrect. The reality is, while many adverse life forms have been inflicted on humanity by the interlopers visiting the Earth and bringing in many challenging predators and pest species to make life unpleasant, there in actuality is a karmic accompaniment to many such introductions because humans as well have become corrupted to be like their tormentors, and all too quick to become perpetrators to suppress and subjugate others around them, and even animals in their charge, in a way that is unhealthy or even cruel. So there is always a karmic interplay in everything that happens. Even when initiated by an extraterrestrial encounter, how the humans react, and what they do as a consequence, will be on their shoulders if there are karmic implications, and that is almost always the case because everything is being recorded. So even when an insult or injury is to a single human being, their vulnerability and suffering becomes a karmic burden for them to resolve and bring about a restoration. So when there is an invasion of a dangerous species of plant or animal that begins harming human civilization, there will be an intertwining of karmic heritage and influences that will need attention, through high-level divine healing, to disentangle and set right. This is one of the reasons your karmic burden for healing needs is so huge, the Law of Karma sees your suffering as, in part, a failing even when caused by someone else, including a race of extraterrestrial beings preying on your world. We understand this seems quite harsh in seeming to blame the victim, but this shows you the level of responsibility you hold from being put in charge of the world to begin with. The more you are in charge, the more you are responsible, and the more anything that goes wrong falls to you to resolve and improve things, and as well, to satisfy the Law of Karma you have done so because it will be watching and recording all that takes place. This is inescapable but has a purpose in holding everyone to account for their actions and their nonactions alike. This keeps everything honest because eventually everyone will pay the piper and, in keeping with the rules of engagement, it is you who will choose when and how you make the payment. We can tell you with authority, it is easier to pay off a karmic debt with acts of loving kindness than with pain and suffering.