Answer is 6 feet away
This applies to patients who have received a radioactive substance during their treatment, especially for cancer. An example is a patient who has been prescribed radioactive iodine for treatment of hyperthyroidism. Maintaining a safe distance of approximately 6 feet from the patient minimizes exposure to the radiation.
to be quite honest, I wasn't too sure on this question but I believe it's habitat destruction. if i'm wrong, my apologies.
In the 17th century, the scientists would have used the ordinary microscope to distinguish between unicellular and multicellular organisms.
Hope this helps!
-Payshence xoxo
