Problem 1: Describe some of the complicating factors that can be encountered in studying a population.
Problem 2: No species is found everywhere on earth. Why? Your answer should include an explanation of why organisms are not found in all places where you might expect them to thrive.
Problem 3: What is a species distribution model? Describe how such a model could be used to predict the future distribution of an organism that is spreading into a new geographic region.