Fishes that migrate between freshwater and marine environments are said to be( ).
A: stenohaline
B: diadromous
C: isosmotic
D: euryhaline
E: semimarine
A: stenohaline
B: diadromous
C: isosmotic
D: euryhaline
E: semimarine
举一反三
- 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
- By listening to the sounds fishes make, man can learn all the following except （）. A: their sizes B: the usual pattern of their migrations C: their environments D: their habits
- 中国大学MOOC: Since /p/ and /b/ are phonetically similar, occur in the same environments and they can distinguish meaning, they are said to be ___________.
- The Great Lakes on the border between Canada and the U. S. are the largest group of freshwater lakes in . A: the continent of America. B: the world C: North America D: South America
- Language is said to be arbitrary because there is no logical connection between _______ and meanings.