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since dna cannot leave the nucleus, genetic information is copied into molecules of mrna and sent out into the cytoplasm. this information is used to manufacture

This information is used to manufacture protein by the help of translation occuring in the cytoplasm of a cell.

Explanation:

During transcription the base of DNA is copied into mRNA molecule .The so formed mRNA is modified by the addition of 7 methylguanosine  cap in its 5 prime end and poly A tail in its 3 prime end.The modified mRNA is then transported from nucleus to cytoplasm.

                   After reaching the cytoplasm mRNA along with the help of tRNA,ribosomes and various proteins factors(initiation factor,elongation factor and termination factor ) uses its genetic information to manufacture protein .

explanation:

they can be good for the ecosystem

"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."