Carbon dioxide in the atmosphere traps heat. Scientists are concerned that too much carbon dioxide is being released into the ai
r by human activity. Using your knowledge of the carbon cycle, where do you think this carbon dioxide is coming from? List at least three possible sources of human-related carbon dioxide production. Carbon dioxide is produced by the burning of fossil fuels.
Ligament is a fibrous connective tissue which joins the bone to bone. It helps to keep the skeletal system in structure and provide stability to the skeletal system.
