A researcher wants to collect data about fetuses that were exposed to high levels of lead during their mother’s pregnancy. The researcher plans to review the medical records for a control group (not known to be exposed to high levels of lead) and an experimental group (exposed to high levels of lead) of fetuses from 12 weeks of gestation through delivery. Is this research permitted under Subpart B?.

i dont know this but ask your teacher for !

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.

you should wear a lead protective shield when having teeth x-rays

hope i

-lavira : )

it depends on how much it could carry.