How did water become so abundant on our planet?

There are many theories that when a meter came to earth that it brought water. Scientist say that there were many meteors that hit until there was finally the perfect liquid for living organisms to drink.This happened a very long time ago but scientists were able to find proof of meteors in our oceans, rivers, lakes etc. Luckily there is a system we humans use to clean water.

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.