Topics of this game:
- burning of materials; releases carbon dioxide, water, heat, and others
- breaks down dead organisms and waste
- producers make sugars that contain carbon
- sugars are broken down to release energy, carbon dioxide, and water
- carbon moves through organisms, between organisms and environment
- important building block of organisms
- movement of nitrogen between the environment and living things
- bacteria change nitrogen gas from the air into forms that plants can use
- ability to do work
- anything that has mass and takes up space
- original source of energy in most ecosystems
- organisms that make their own food
