The major osmoregulatory problems of saltwater fishes are ( ).
A: water gain and salt loss
B: water loss and salt gain
C: water gain and salt gain
D: water loss and salt loss
E: nonexistent because freshwater fishes are isosmotic to their environment
A: water gain and salt loss
B: water loss and salt gain
C: water gain and salt gain
D: water loss and salt loss
E: nonexistent because freshwater fishes are isosmotic to their environment
举一反三
- Mangroves grow in shallow and muddy salt water or brackish waters. ( )
- （） is used for cylinder and cylinder head， the salt water is used for cooling the lubricating oil， the fresh water in the coolers and the charging air in the air cooler.
- Syntactic change in English involves ______. A: rule loss B: gain C: modification D: all of the above
- My teacher told me that salt water _________ (freeze) at a lower temperature than fresh water.
- Choose the correct letter, A, B, C or D.Write the correct letter in boxes 22-26 on your answer sheet. What factor drives Antarctic water to move beyond the continental shelf A: The increase of salt and density of the water B: The decrease of salt and density of the water C: The rising temperature due to global warming D: The melting of fresh ice into the ocean