Those two are the muscular system and the excretory system because you use your muscles to push up and down and your excretory system produces the sweat you use while doing them
Brevity is a form of short hand thus would save much time and is needed in the medical field as it needs the use of only few words and would mean short and precise. Hope this answer would be of help.
Depressants is the answer
Answer:
Interference
Explanation:
The word interference would be a suitable one to go here for this question.
