La figura muestra un resorte que se hace oscilar en un extremo. Lo que se observa es un pulso: * a)Transversal
b)Longitudinal
c)Circular
d)Elíptico

La figura muestra un resorte que se hace oscilar desde un extremo. Lo que se observa es una propagación de una onda: *

a)Imagen sin leyenda
b)Transversal
c)Longitudinal
d)Circular
e)Elíptico

The correct answer is  "c".  it is "c" because melting is an endothermic change, and endothermic get's energy from surroundings. 

Iassume the answer is 75 feet. inwards to outwards rather than outwards to inwards. probably be 75.hachures are stokes drawn in direction of the steepest slope. a series of short parallel lines drawn on a map to indicate topographic relief. it is actually called hachures on contour lines. the small marks in the center of the feature are called hachures.observe the picture attached

Mass / weighthope it !