One definition for a "system” is, a set of things working together as parts of a mechanism or an
interconnecting network. How do you identify
systems within a Rube Goldberg Machine? How do
you know when one system ends and another
begins within the machine?

i was thinking more like reflects green light, just not sure

a electromagnetic waves

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.