Which type of gene is most likely to be widely expressed in the body of someone who has a superficial scrape?

the gene that controls the production of stem cells
the gene that controls the production of skin cells
the gene that controls the production of red blood cells
the gene that controls the production of cardiac cells

Johnny rode his bike 4 blicks down the street to his friend's house once he got to his friend house and realized he could not cone out to play he turned aroubd and went back home. what is displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

What is true of sea slugs in these orders

Drag each tile to the correct box. arrange the layers and faults from oldest to youngest.