What does it mean? Any keywords or short explanation would do

Miguel is making an obstacle course for field day.at the end of every sixth of the course,there is a tire .at the end of every third of the course,there is a hurdle.at witch locations of the course will people need to go through more than one obstacle?

47. a student is frightened by a loud noise, which results in a hormone being released into the blood. the hormone causes the student's heart to beat rapidly. the two systems that work together to cause this reaction are the endo- crine system that secretes the hormone and the (1) nervous system (3) excretory system (2) reproductive system (4) digestive system

You have learned in your course that the egyptian society was organized in to classes (like a pyramid). the class one was born into affected their daily lives. is this true for today? does the socio-economic class you are born into determine your daily life activities? why or why not? you must write at least one complete and detailed paragraph to earn full credit.