What makes up a stars outer layers? a. cool gases b. dense gases c. hot gases d. hot and dense gases

d. hot and dense gases

Explanation:

The layers of a star are the chromosphere, corona, and photosphere. The outermost layer is the corona, which is composed of dense and hot gas.

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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."