You are studying how tools have evolved through cultural evolution. you find several instances where groups with very different technologies meet and there is a transfer of technology from one group to the other. this is most similar to what process in biological

a) genetic drift
b) natural selection
c) mendelian inheritance
d) horizontal gene transfer

Silicon is cut into tiny pieces for computer chipslead is melted to form pelletsliquid water freezes to form ice

The need activity of the nurse is to suction discharges from the trachea. current treatment approaches in the pressing consideration facilities or crisis offices are corticosteroids and nebulized epinephrine; steroids have demonstrated advantageous in extreme, direct, and even gentle croup. in the clear instances of croup, anti-microbials are not endorsed, as the etiology is viral