which one is mechanical and electromagnetic.

1. does not require a medium

2. requires a medium

-- Mechanical waves DO require a medium in order to travel from place to place.  (Sound can't travel without some material to travel through on the way.)

-- Electromagnetic waves do NOT need a medium in order to travel from place to place.  (Sunlight reaches us from the Sun without anything to travel through on the way.)

falling water hydro = water .. spectcular places these plants are

get the total number of pieces of fruit and divide it by 4 to get the average. the result is the answer to the problem. 14 total number of fruits and there are 4 members. 14 divided by 4 is equals to 3.5.