yes. everything happens for a reason i guess.. or maybe it just happens that way who knows. why are we even here?
every organism impacts every other organism hell, we're fucking with the planet's climate control systems (ozone, icecaps, salinity of the oceans, etc) everybody and everythign is under the effects of the temperature of the planet the motions of the currents int he ocean the weather raining down on us, etc. so yeah, humans have had an effect on everything earthly with humans the arguement is whether or not our impact on the planet is "Natural"
There are lots of species at the bottom of the ocean that have yet to be effected by us. There are most likely other species of animals within the universe that have had absolutely no effect from humans.
Every species or every single organism? I mean we likely in some way have had some influence on every species in some way over the course of humanity, but if you mean directly by us as of this very moment, likely not.
^ good point. We most certainly didn't have any effect on dinosaurs.... (unless you include digging up some of their skeletons)
we've been annihilating species from the oceans for theousands of years most critters on the bottom of the ocean eat stuff that falls from somewhere in the water column we've certainly effected everything on the planet at least indirectly once you cause any species to go extinct you have an effect on the entirety of an ecosystem (the planet in this case) that will permeate throughout time it's a realization that causes us to dig deep be deep and think of the big picture