What day is considered to be the first day of a female's reproductive cycle?
When hormone levels are low and the uterus lining is shed.
When hormone levels are high and the uterus lining is shed.
When hormone levels are low and the ovary releases an egg.
When hormone levels are high and the ovary releases an egg.

The first day of menstruation - the day whenthe uterus lining starts to be shed. This is induced by a low level or hormones (this is also why some women feel down during this time)

Answer Link

kamakshiruhela11 kamakshiruhela11 · Answer 2 · 2022-04-05T14:45:22+02:00

The first day of a female's reproductive cycle is when hormone levels are low and the uterus lining is shed.

How does the menstrual cycle work?

The moderate menstrual cycle lasts 28 days. The cycle begins with the first day of one period and ends with the first day of the next period.

The average woman ovulates on day 14. At this time, some women face minor pain in their lower abdomen, spotting, or bleeding, while others do not have any symptoms at all.

Thus, When hormone levels are low and the uterus lining is shed.

To learn more about the menstrual cycle click here:

https://brainly.com/question/971994