assume that one particular atom of rhodium (RH) has an atomic mass of 102. why does this number not exactly match the atomic mass of 102.91 listed o the periodic table for this element?

answer; i believe its echoic memory,it is believed to last three to four seconds; good luck

i believe the answer is a or 1

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above