the practice of exchanging things with others for mutual benefit, especially privileges granted by one country or organization to another..... Here is a sentence.... the Community intends to start discussions on reciprocity with third countries
always keeping at least one foot on the ground you reduce your risk of musculoskeletal injury.
C experiment because you can do experiments on people by giving them extra sugar to see who they react
Answer:
using a ruler to scratch the skin under the cast
Explanation: