12. biology is the study of living things. carbon is the element that makes life possible. why is carbon so special that it is required for life? [] it is a positively charged ion needed in reactions. [] it has 4 valence electrons, so it can make 4 strong bonds with other atoms. [] it is a polar molecule, which makes it have a high heat capacity. [] because it has 4 valence electrons, it is small and only makes small compounds.

If these are the missing choices: a. to determine skin temperature, place the back of your hand against the patient's skin.b. determine body temperature by touching the patient's hands and feet.c. skin temperature will tell you very little about this patient's condition or well-being.d. the patient's skin temperature and color will likely be warm and red.my answer is: a. to determine skin temperature, place the back of your hand against the patient's skin. using the back of the hand to check for temperature rather than the palm is more effective because the back of the hand has more nerves that can feel and transmit the temperature than the palm.