Ships cannot be so heavily loaded if they want to sail in fresh water as they sail in the sea, because ______. A. fresh water is ‘lighter’ than sea water B. there’s too much salt in sea wa
Ships cannot be so heavily loaded if they want to sail in fresh water as they sail in the sea, because ______.
A. fresh water is ‘lighter’ than sea water
B. there’s too much salt in sea water
C. sea water is ‘saltier’ than fresh water
D. fresh water is more polluted