True or false: volcanic activity was more frequent in earth's past than it is today. true false

True

The early earth was not stable planet. The early earth atmosphere was reducing and hot. The geosphere was completely unstable and undergoes high seismic activities like earthquake and volcanic eruptions. Now, the geosphere has attained stability due to the colonization of trees and deposition of sediments resulted in rock formation beneath the earth crust which is efficient in preventing the hot lava from mental to come above the earth crust and form lava.

"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."