Answer:
The spiny plant from the volcanic Hawaiian highlands may not survive the ravages of climate change.
Hope this helps :)
Answer:
B. The cytoplasm
Explanation:
One of the main responsibilities of the cytoplasm is to control all metabolic activity that takes place within the cell.
Answer:
The correct answer will be option-C
Explanation:
The rhythm of the heartbeat is controlled by the pacemaker of the heart called the sino-atrial node.
The SA node generates action potentials which trigger the contraction and relaxation of the atrium and ventricles. The membrane potential generation initiates by the depolarization of the cell membrane when the L type of Ca⁺² ions opens up and calcium ions enter the cell.
This depolarizes the cell until the potential threshold is reached which lies between the -40 and -30 mV.
Thus, Option-C is the correct answer.
Growth & repair and maintence if body cells and tissues and its secondary function is energy
Friedrich Miescher in 1869
