Which of the following hormones is released by the corpus luteum after ovulation and causes a negative feedback loop with the hypothalamus and the anterior pituitary? a) progesterone
b) luteinizing hormone
c) gonadotropin releasing hormone
d) estrogen
e) gonadotropin

Option a: progesterone

Explanation: After ovulation, empty follicle becomes corpus luteum which secrets hormone progesterone. Corpus luteum establishes pregnancy by releasing progesterone hormone after ovulation by making the uterus feasible for implantation by making it thick. Progesterone takes part in the development of endometrium for the stability of pregnancy and helps to feed the developing fetus. During the entire pregnancy, progesterone levels are maintained which doesn't allow more eggs to be developed. If the fertilization doesn't occur, the corpus luteum does not secret this hormone, means the level of this hormone becomes low and menstruation occurs.

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves