Description should include
- carbon dioxide output
- oxygen intake
- excretion of nitrogen.
Process/Skill Questions:
- How do fish obtain oxygen from fresh water?
- How do fish release carbon dioxide and nitrogen into the water?
- How is the rate of metabolism in freshwater fish affected by external factors such as temperature and water quality?
- How is the rate of metabolism in freshwater fish affected by factors such as the fish's age and reproductive cycle?
- How are certain species of fish (e.g., carp, catfish, bowfin) able to live in oxygen-depleted water?