(a) Air
(b) Derive form sea water
(c) Use CO2 which is produced during their respiration only
(d) Do not require CO2 at all
Answer: (b) Derive form sea water
Explanation: (b)
(45)
5/5 - (1 vote)
(a) Air
(b) Derive form sea water
(c) Use CO2 which is produced during their respiration only
(d) Do not require CO2 at all
Answer: (b) Derive form sea water
Explanation: (b)
(45)
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