Answer: There are a bunch, but chocolate/cacao is a main one!
Explanation: Hope this helped :)
Answer:
The CORRECT ANSWER IS B.
B. Unlike the other countercurrent systems, a countercurrent multiplier system expends energy in active transport.
Explanation:
The countercurrent multiplier system involving the loop of Henle uses up energy in the form of ATP to actively conduct NaCl out of the filtrate in the upper region of the ascending limb of the loop. This energy in the form of ATP that is being used uniquely differentiates a countercurrent multiplier system from the different forms of countercurrent systems.
Simply survival of the fittest. That means that if the mutation works in its favor it will survive long enough to reproduce and the others that dont have the mutation will die.
Hope this helps.
