[science] what is the volume of the key?

5mL

Explanation:

If we have a graduated cylinder with 50mL of water, and after adding a key, the volume rises to 55mL, all we have to do is calculate the difference between the two values (so, we subtract):

55 - 50 = 5

Hope it helped,

BiologiaMagister

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.