-the burning of fossil fuel
-natural events
-waste in landfills
-agricultural activities
-mining operations
-etc
Answer:
Explanation:
Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
Answer:
The pelvic bone supports your "trunk". Which is important because the area that it supports holds vital organs needed to live.
Explanation:
