Can someone help me pls I'm so confused 2 Describe one negative and one positive effect that human activities have had on the ozone layer

3 Describe one negative and one positive effect that humans have had on acid rain.

4 Scientists think we should try to stop carbon dioxide levels rising. Why do they think this?

5 Describe two ways that we can stop the amount of carbon dioxide in the atmosphere rising

6 How could clouds and mirrors be used to stop Earth getting warmer?

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Explanation:

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"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."