If we were to leave all invasive species alone and allow nature to run its course, what would the circumstances be for the environments?

i don’t no. suiopgohjk

thinking it would be d not too sure but i think it's right

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.