Answer is: active transport.
In active transport<span> because energy is required to move the sodium and potassium ions against the concentration gradient. There is two type of active transport:
1) </span>Primary active transport directly
uses metabolic energy (adenosine triphosphate- ATP) to transport molecules
across a membrane.
2) In secondary active transport (coupled
transport) there is no direct coupling of ATP, energy derived from
the pumping of protons across a cell membrane.
Answer:the answer to your question is studying
Answer: This would affect the whole marine ecosystem. It would also effect the oxygen concentration inside the sea and in outer environment.
It contributes to a huge proportion of oxygen in the environment and if there is some sought of pollution in the sea then the aquatic animals will die and it will effect the other animals present in sea.
The marine ecosystem will be disturbed and the food web inside the sea will also be hampered.
Answer
If we look at dry mass it is made by Carbon (45%) and oxygen (45%).
The best answer for your question is A
