Question

which of the following children's playground equipment can be used to model and explain the movement of matter in the biosphere? (1 point)

Slide
Merry Go Round
Swing
Seesaw
Ms. Sue
http://embed.wistia.com/deliveries/8798c6a38d87ed1da69e621718c8fb3ea6819801.jpg
me
its merry go round