The dense fluid in chloroplasts where carbon dioxide is converted to sugar is called the
a. thylakoid
b. stroma
c. grana
d. stomata

The answer is B. Stromata i just took the test

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.