. Proteins in eukaryotic cells which control the progression of cells through the cell cycle are –

cyclins
recyclins
cytokines
cytochromes

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.

and after water is usually warmed by the sun the water temperature raises and then evaporates .

they have identical fossils of organisms that have evolved over time.

both have animal fossils preserved in them due to weathering and erosion.

they contain different fossils because life on earth has changed through time.

the fossils in them were formed on the surface of earth due to exposure to sunlight.