https://www.researchgate.net/publication/263703355_Management_challenges_of_Didymosphenia_geminata
Carbon is found in the atmosphere mostly as carbon dioxide.
The answer is; A gopher snake occupies a burrow made by the desert rat
Commensalism involves a relationship between two organisms where one benefits while the other is unaffected. In this case, the gopher snake gets from the burrow made by the desert sake. The desert rat is unaffected (does not benefit or lose) by this action by the snake.
If a scientist makes the argument that she has found DNA evidence that shows that evolution does not exist, the evidence would be the weak physical similarities among closely related organism and also among distantly related.
The answer would be an Ecologist