Mineral

if i said that mineral had “glassy” luster, but you looked at another sample of the same mineral and thought it had a “dull or earthy shine”, then how could that be? why isn’t luster a good property to identify minerals on its own?

answer:

um what

explanation:

substitution is the answer in this case

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.