In one to two sentences describe what happens during the regeneration stage of the calvin cycle

The remaining G3P molecules are converted into ribulose 1.5 bophosphate (RuBP), a five-carbon sugar that combines with CO2 in the first stage. The reaction is sped up by RuBP carboxylase (rubisco), an enzyme that catalyzes the combination of CO2 and RuBP.

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

yes it is weird but true