Non-human life differs from that because the environments are covered with like sewers, buildings, and roads. Green spaces such as parks, backyards, and undeveloped lots are scattered in among the developed areas instead of all connected together. Plants and animals have to deal with exposure to toxins from vehicles and loss of habitat and food sources.
Hey there!
Pluto crossed Neptune's orbit. However, their paths do not actually cross, they just swap positions.
Hope that helps!
~Autumly
1.) carbon dioxide
2.) sulfur dioxide
3.) nitrogen oxides