At a distance of 37 ft , an ionizing radiation source delivers 6.5 rem of radiation. how close could you get to the source and still have no biological effects?

What role does weathering have in shaping earth’s surface? a) it allows sediments to fall out of a medium. b) it sediments settle on a new surface. c) it breaks down older material into sediments. d) it transports sediments to a different location. will give brainliest, answer quickly.