29. Which of the following is not a physical change?" A) iron melting
B)food rotting
C)breaking a glass
D)shredding paper

The wave shown on the electromagnetic spectrum disturb the medium it passes through a)different frequency. b)the same frequency .

This element exists in adundance in the sun.explain how you would go about capturing sunlight.would this captured sunlight contain any of the element?

Most materials are not magnetic because their magnetism has worn off. their magnetic domains are arranged randomly. they lack magnetic fields. earth’s heat has destroyed their magnetism.