Osmosis is the process where there is some balancing of concentrations with the solvent moving. In this case, we have that within the fish and the water, the salt content is different; this creates a flow of water. IN THE SEA, the seawater has more salt and this creates a flow towards the sea from the cells of the fish; choice a WOULD BE correct in this case. In freshwater though, we have that the fish has more salt inside it (higher concentration) than the surrounding water. Hence, water goes in the fish and the fish needs to conserve its salts in the form of urea; thus, they must consume lots of salt and have low urine. THE CORRECT ANSWER THUS IS B.
P.S. comment on osmoregulation: it does not happen when fishes are isotonic to their environment, namely they have the concentration of the water surrounding them; then no flow is created.
In terms of osmoregulation, freshwater fish must have dilute urine and consume salt in their diet.
Answer: Option B
<u>Explanation:</u>
Osmoregulation is a major criteria of that is required for the living of the fishes in the water, the balance of the ionic content between the external water environment of the fish and its internal environment is required for its healthy survival.
Heat can transfer between two objects touching one another. What type of heat transfer is this? What will the temperature of both objects be after these objects remain in contact for a long period of time?
The energy from the sun is transferred to the earth surface in the form of heat and light. This done through radiation and convection methods heat from the sun is transported to the earth surface through radiation and convection techniques while the light is being transferred.
