The answer would be A because The Modern Synthesis describes the fusion (merger) of Mendelian genetics with Darwinian evolution that resulted in a unified theory of evolution.
Answer:
Kidneys
Explanation:
Sodium is an electrolyte which when present in the blood flows in its ionic form. The presence of the sodium ions in blood maintains the osmolarity of the blood by affecting the reabsorption and excretion of the water.
The sodium concentration in blood is maintained by the kidneys, a pair of the bean-shaped organ in the abdomen.
The kidneys when sense the low concentration of the sodium in the blood allows the adrenal glands to secrete aldosterone hormone. The hormone acts on the tubule of the kidney and allows the reabsorption and retention of the sodium in the blood.
Thus, the kidney is the correct answer.
The answer is A. are specialized. Hope this helps
The root cells absorb the water and nutrients and is carried in the veins by the xylem