What does a negative ion mean?

Negative ions are molecules floating in the air or atmosphere that have been charged with electricity. Negative ions exist in nature in tons of places, including: ultraviolet (UV) rays from the sun. discharges of electricity in the air after a thunderclap or lightning strike.

Explanation:

Ions are invisible charged particles in the air – either molecules or atoms, which bear an electric charge.

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"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."