Answer:
18. Which four body systems interact to allow a person to sneeze:
F. Muscular, immune, nervous, respiratory.
Don't really know the answer for the second one, sorry <33
A cell can only respond to signals from other cells, not from the physical environment. receptor activation. The ability of a specific tissue or organ to respond to the presence of a hormone is dependent on: the presence of the appropriate receptors on the cells of the target tissue or organ.
