What type of scientists uses a dichotomous key?

You are working in the lab and are working with the same element but with varying isotopes of the element. you are working with c-11, c-13, c-14, and c-15. what is the average atomic mass of this element? (use periodic table) a- 12 b-15 c-14 d-13

Amajor source of energy for your body comes from

The result of saul's disobedience was1. samuel became the next king in place of saul.2. agag, the king of the amalekites broke free and killed saul.3. the lord rejected saul from being king.4. he was sent to live with jesse in bethlehem.plz plz