PLZ HELP A scientist is testing the effects of exercise on students' heart rates. She asks a student to run in place for 1 minute and another student to stand still for one minute. She then measures and records their heart rate in beats per minute ONLY ONCE. The scientist decided one trial was enough for her study. Is this a well-designed experiment and why?

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.

Where are the following choices

Gravitational force i believe

The answer is lymph sinuses.