Why ovulation does not occur when the uterine lining is not at it's thickest?

Place the steps tor the formation of the enzyme pepsinogen in correct order

Actinobacteria sp. are fermenting organisms (which do you use oxygen to breathe) referred to as chemoorganohetereotrophs this means they break down organic material and convert it to inorganic material. which part of the carbon cycle does this describe

Which nucleotide component contains nitrogen