1.The apostrophe after the word years is not supposed to be there. 2. The word we've is the wrong word. 3.The apostrophe in the word trial's is not supposed to be there. 4.You're is not the right word for the sentence and should be changed to your. These are the mistakes that I have found, but at the same time, recheck to make sure these mistakes can be found within the paragraph.
Wildlife management, I believe.
all of the above..............
Is this supposed to go along with a book?
If so can you include the text.