Which of the following is likely to have the lowest concentration of O₂?
A) warm salt water
B) cool salt water
C) cool fresh water
D) air
Correct Answer:
Verified
Q2: A waste product of respiration is
A)electrons.
B)hydrogen peroxide.
C)carbon
Q5: Evolutionary adaptations for survival on land produced
Q6: Gills are unsuitable for animals living on
Q6: The tracheal system of an insect is
Q8: Which of the following organisms has a
Q8: Which of the following animals requires the
Q10: During gas exchange, body cells
A)take up CO₂
Q11: Which of the following animals would be
Q17: Which of the following statements about fish
Q18: In the countercurrent exchange system of fish
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