B
Publish his findings in a research journal because he is experimenting what medicinal properties can be tested or are associated with the plant. He should have kept the notes in a research journal for making observations so B.
        
             
        
        
        
Answer:
Pb has an atomic mass of 82. If an atom of that element has an atomic mass of 80, that atom is known as: an isotope.
 
        
             
        
        
        
Answer:
southward
Explanation:
Western boundary currents flow toward the poles. Surface ocean currents flow clockwise, southward in the South, and northward in the North.
Differently from western boundary currents, eastern are flowing in a clockwise direction in the Northern Hemisphere and a counterclockwise direction in the Southern Hemisphere.