Alaska Content and Performance Standards
AK.D1. Concepts of Earth Science (SD1, SD2, SD3, SD4)
 SD1.2. The student demonstrates an understanding of geochemical cycles by describing the water cycle to show that water circulates through the crust, oceans, and atmosphere of Earth.
AK.SC. Concepts of Life Science: A student should understand and be able to apply the concepts, models, theories, facts, evidence, systems, and processes of life science. A student who meets the content standard should:
SC3. Develop an understanding that all organisms are linked to each other and their physical environments through the transfer and transformation of matter and energy.
AK.SD. Concepts of Earth Science: A student should understand and be able to apply the concepts, processes, theories, models, evidence, and systems of earth and space sciences. A student who meets the content standard should:
SD1. Develop an understanding of Earth's geochemical cycles.