Why Come Back North in the Spring? Migration, Geography, and the Seasons (Back to Teaching Suggestions) National Science Education Standards Inquiry Ask a question about objects, organisms, events. (K-4) Life Science Organisms have basic needs. Organisms can survive only in environments in which their needs can be met. (K-4) An organism's behavior patterns are related to the nature of that organism's environment. (K-4) An organism's behavior evolves through adaptation to its environment. (5-8) National Geography Standards How to use maps and other geographic representations, tools, and technologies to acquire, process, and report information.