Since the number before the tens place is 1, that means you will round the number down instead of up so your answer is :
4620
During prophase, the parent cell chromosomes — which were duplicated during S phase — condense and become thousands of times more compact than they were during interphase. ... Cohesin forms rings that hold the sister chromatids together, whereas condensin forms rings that coil the chromosomes into highly compact forms.
The answer is c steroids.
During exercise stroke volume increases because more blood is sent back to the heart due to the muscles squeezing blood in the veins