The machine is making less liquid oxygen than normal. What is wrong?

A) There was frozen water in tank 2, which is blocking some of the oxygen from going into tank 3

B) Some of the liquid oxygen evaporated in tank 3

C) Some of the oxygen didn't condense in tank 2

yes by elenaboo   it could cause lots of stuff

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

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.

what is the statement?