Los efectos o respuestas que ocurren cuando se manipulan variables en un experimento se observan sobre: * (1 Point) el problema
la variable independiente
las variables controladas
la variable dependiente​

the index of refraction of the second medium is higher. i just took the test trust me !

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )