A bunch of the same critters. Nah I am just kidding, you will find a lack of resources because if they are all the same animals they will all eat the same thing. I hope this helps you.
The one who doesn’t smoke has a very low chance of getting lung cancer as the one who does make has a good change of getting lung cancer. Which makes there health different which also makes there also makes there Likelihood of getting lung cancer differ.
Getting to see and investigate the creatures of the past
The answer it’s Compression
