7. Step one of photosynthesis is called the Electron Transport Chain (light dependent reaction)... What happens in step one of photosynthesis?
A. sunlight is absorbed; oxygen is used and carbon dioxide is released
B. sunlight is absorbed; water is used and oxygen is released
C. sunlight is absorbed; carbon dioxide is used and water is released
D. sunlight is absorbed; carbon dioxide is used and glucose is released

"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."

characteristics of hydrocarbons

idk what happened..you tell