Some changes in ecosystems occur slowly, while others occur rapidly. Changes can affect life forms, including humans.
All students will understand that life science principles are powerful conceptual tools for making sense of the complexity, diversity, and interconnectedness of life on Earth. Order in natural systems arises in accordance with rules that govern the physical world, and the order of natural systems can be modeled and predicted through the use of mathematics.
All animals and most plants depend on both other organisms and their environment to meet their basic needs.