Mexico's Wet and Dry Seasons Dr. Brower’s Precipitation Graph (Back to Lesson) National Science Education Standards Inquiry Use data to conduct a reasonable explanation. (K-4) Life Science Organisms have basic needs. They can survive only in environments in which their needs can be met. The world has many different environments, and distinct ones support the life of different types of organisms. (K-4) All organisms must be able to obtain and use resources, grow, reproduce, and maintain stable internal conditions in a constantly changing external environment. (5-8) An organism's behavior evolves through adaptation to its environment. How a species moves, obtains food, reproduces, and responds to danger are based in the species' evolutionary history. (5-8)   Copyright 2006 Journey North. All Rights Reserved. Please send all questions, comments, and suggestions to our feedback form