Hi there, the answer is 625 sets of twins, as 1250 “twins” occur to a singular person, so “pairs” would be 1250/2 which equals 625.
Renin. Renin is a hormone that is produced by the kidneys and it acts to elevate the blood pressure. ... Angiotensin II causes blood vessels to constrict, which raises the blood pressure. It also causes the kidneys to retain more sodium and water, which raises the volume of the blood
Answer:
an intense feeling of deep affection.
Explanation:
national, environmental, professional, and social