> Earth has changed drastically with all the humans on it.
do you have earth scale measures for this? what is your threshold for drastic?
on most measures I can think of, earth is pretty much the same as it was 100k years ago. maybe you are suggesting humans have a drastic impact on other species on earth?
Geologically it is the same, a stone is a stone, true that. The creatures on it, both plants as well as animals, changed drastically by human intervention.