A test used to measure the levels of radioactively-tagged hormones in the plasma of the blood is called .

explanation:

on disadvantage of hydroelectric power is the cost. another disadvantage of using hydroelectric power is finding a water source powerful enough to harvest hydroelectric power.

the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.

colors do exist. the color of the sky is actually violet; humans percieve the color of the sky as blue.

answer; ///the above statement is (true);