Hydrochloric acid (HCI) is a strong acid made from two reactive chemicals, hydrogen (H) and chlorine (CI). Palladium (Pd) and platinum (Pt) are rare but valuable metals. Highly reactive chemicals are sometimes stored in
argon (Ar) gas because it does not react with most substances.
Which of these elements is an almost completely nonreactive nonmetal like argon?
A. neon (Ne)
B. chlorine (CI)
C. platinum (Pt)
D. hydrogen (H)

"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."

the answer is: metamorphic rocks often show the presence of fossils, also a

hope i

-lavira: )