Curated OER
Iron Bugs
Students describe how microbial metabolism affect geochemical processes. They define and explain the function of siderophores. They describe two ways bacteria utilize iron and explain why iron availability may limit biological activity.
American Geosciences Institute
American Geosciences Institute: Earth Science Week: Traveling Nitrogen
Students play the role of nitrogen atoms traveling through the nitrogen cycle to gain understanding of the varied pathways through the cycle and how nitrogen is relevant to living things.
Annenberg Foundation
Annenberg Learner: Carbon Lab
This lab uses a robust model of the carbon cycle to give an intuitive sense for how carbon circulates through the atmosphere, biosphere, oceans, and crust.
Georgia Department of Education
Ga Virtual Learning: Ap Environmental Science: Science, Matter, Energy, Systems
Through interactive activities, reading exercises, and lab activities, students study how science, matter, energy, and systems are interrelated.
Open Curriculum
Open Curriculum: Recycling Matter in Ecosystems
Students learn about biogeochemical cycles that recycle matter on Earth.
US Geological Survey
Mercury in the Geochemical Cycle
Mercury in the geochemical cycle ultimately affects the food chain. Learn about this and its effect on the Everglades.
McGraw Hill
Glencoe Biology: Cycling of Matter: Self Check Quiz
Try these five multiple-choice questions about the cycling of matter. Each question has a clickable hint prompt as well as a self-checking feature.
Khan Academy
Khan Academy: Biogeochemical Cycles Review
Review information on the cycling of matter throughout the spheres of Earth.
Khan Academy
Khan Academy: Biogeochemical Cycles
Test your knowledge of the water cycle, carbon cycle, and nitrogen cycle.
CK-12 Foundation
Ck 12: Biology: Recycling Matter Study Guide
Review some of the cycles that recycle matter through Earth's biospheres.