Which of the following is a products of cellular respiration that can be used for photosynthesis

You didn't put the answer choices, but I'm going to assume CO2 because our cells give off CO2 and plants need it in their photosynthesis.

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.

it's not c. i took the quiz and got it wrong. so my best guess is b.

have a great day, and hope this .