Answer:
because existing cells divide to produce new cells
The presence of palpable lymph nodes.
Lymph nodes are relatively large in children, and the supperficial ones often are palpable even when the child is healthy.
Genetically identical offerings or daughter cells by binary fission
Remain calm
Swim with the current
Draw attention ( if she does not now how to swim)
During exercise stroke volume increases because more blood is sent back to the heart due to the muscles squeezing blood in the veins
