The sexual partners a person has, the greater the chance that person will be exposed to HIV/STD's. -more
-less

Which experiment would most likely contain experimental bias ?

This is the diveristy of ecosystems natural communites and habits it is the variety of ways that species interact with each other and their environment

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