The secretion of the hormone triggers the secretion of the hormone triggers fsh; ovulation fsh; menstruation lh; ovulation lh; menstruation

LH ; Ovulation FSH; Menstruation

Luteinizing Hormone (LH) is released from the pituitary gland. This hormone causes the rupture of the mature ovarian follicle in the ovary. By rupturing mature ovarian follicle egg or ovum is released. Release of ova is called ovulation.

Follicle stimulating Hormone (FSH) also released from pituitary gland. It stimulates the growth of an ovarian follicle and it also stimulates estrogen production of the follicle. It triggers menstruation.

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

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