What is the part of the nitrogen cycle?

answer  The nitrogen cycle involves three major steps: nitrogen fixation, nitrification, and denitrification.

Overview: The nitrogen cycle involves three major steps: nitrogen fixation, nitrification, and denitrification. It is a cycle within the biosphere which involves the atmosphere, hydrosphere, and lithosphere. ... Neither plants or animals can obtain nitrogen directly from the atmosphere.

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.