Exposure to excessive electromagnetic radiations can be harmful to the human body. For two named types of electromagnetic radiation, describe: a harmful effect and how the risks of exposure can be reduced.

With i really need the correct answer!

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages