How does propionibacterium acnes cause acne in humans? a. overuse of antibiotics can cause bacteria to clog pores in humans. b. this type of bacteria is found on the human skin, and it can clog pores. c. this type of bacteria often enters a cut and causes an infection in humans. d. close contact with an infected person can lead to acne in humans.

Drag each label to the correct location. each label can be moved more than once match the properties with the subatomic particle

Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants.d. selecting individuals at random.

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his 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