Are Humans Considered Keystone species?
I am voting to close as homework question.

I felt like I would give you a few hints though.


  is it possible for other animals to live without us?


Life on earth have existed for almost 4 billions years. Animals have existed for about 600 millions years. Modern human (AMHS) have existed for 0.2 million years.


  Do humans have a huge impact on the ecosystem?


Here are just a few pictures taken by airplane of agricultural lands

 



and a koala searching its home after a rapid man-made deforestation