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.
Because if there is a minimal variation of it the normal state of pH, it can cause severe effects in the brain, arteries, the heart, and other organs.
In other words, it can have some serious effects on the body systems that can lead big diseases, like cancer.
Answer:
the answer is D :)
Explanation:
Active transport uses energy molecules to move particles like sodium, against their concentration gradients, from areas of low concentration to areas of high concentration.
