Question 6 1 / 1 pts What might be a challenge in trying to estimate the fish population for a certain species? (Mark all that apply.) You can't see all of the fish. Fish in deep water might be harder to find. You have to deal with gear biases. (Some types of gear might be more likely to get catch certain species than others.) It might be easier or only possible to catch fish of certain sizes. There are no chall It is easy to the number of fish