In ferns, some leaves are "fertile" in that they bear sporangia. what are the structures in gymnosperms that are analogous to a leaf and sporangia? select all that apply.
(a)-seed coat and embryo
(b)-cone scale and pollen-producing sporangia
(c)-cones and seeds
(d)-cone scales and ovules

"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."

69 is the correct math for the amino acids

acceleration = 18/3 = 6 m/s per second.

hope i

-lavira: )