They do not have external ears like us. but they do have ear holes located directly behind their eyes. frogs ear holes are covered with thin tympanic membranes or the eardrums that protect the inner ear cavity.
They are the managed consumption of natural resources to prevent their depletion or the destruction of the environment.
Anthrax is a rare bacterial disease spread by animals, insects, and mosquitoes. Victims may feel ill or have skin ulcers and difficulty breathing. I believe that you can find how it was used in a (story I believe in your case) by trying to find its significance of it to the story. Try to imagine what the story would be like without it? Does it change the ending?
Hope this helps!