Paleontologists can definitively conclude whether dinosaurs were endotherms.
a. true
b. false

The correct answer is option b. "False".

Explanation:

There is still not definitive evidence that let paleontologists conclude whether dinosaurs were endotherms, in other words, warm-blooded animals able to heat themselves without the sunlight. Actually, evidence suggest that dinosaurs' fast pace to growth did not allowed them to be neither ectotherms nor endotherms. The most accepted theory is that dinosaurs occupied a middle ground called "mesotherms".

"menstrual cycle is a complex cycle that consists of several processes. order of occurrence of steps in menstrual cycle are as follows:

1. high progesterone levels maintain the endometrium lining of the uterus.

2. endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release fsh and lh.

3. fsh and lh stimulates the follicles to develop and the oocyte to produce estrogen.

4. rising estrogen levels suppress fsh production and development of other follicles.

5. a spike in lh causes follicle to rupture.

6. a breakdown of corpus luteum causes progesterone level to drop."