When rainwater attacks formations of limestone, the minerals dissolve and wash away with the mildly acid rainwater. this is an example of?

This is an example of Carbonation.

This chemical reaction involves conversion of carbon dioxide to give carbonates, bicarbonates, and carbonic acid.

This commonly happens when rainwater attacks formations of limestone resulting in the dissolution of the minerals in which it is washed away with the mildly acid rainwater.

Read more about Carbonation here link

explanation: grsaa

"menstrual cycle is a complex cycle that consists of several processes. order of occurrence of steps in menstrual cycle are as follows:

1. high progesterone levels maintain the endometrium lining of the uterus.

2. endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release fsh and lh.

3. fsh and lh stimulates the follicles to develop and the oocyte to produce estrogen.

4. rising estrogen levels suppress fsh production and development of other follicles.

5. a spike in lh causes follicle to rupture.

6. a breakdown of corpus luteum causes progesterone level to drop."