What is important in living things survive. explain why living things need nitrogen.

Nitrogen makes up part of the proteins and DNA in our and other organisms cells. 

Sunlight.
Living things need nitrogen because it forms a part of the proteins and DNA that are found in cells. Animals get nitrogen from eating plants and other animals and just like animals, plants require nitrogen to grow and survive.

No its just makes the straight guy curious

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.