How does the nervous system work with the muscular system to cause muscles to contract?

Why was the sample heated in step 5? describe the chemical principles involved in the reasoning behind this step?

Which term describes the number of waves that pass a given point in a given time? crest frequency trough wavelength

Many people try to eliminate fat from their diets. which is one reason it is necessary for humans to eat fat? a. eating fat is the fastest way to get energy. b. fat eliminates triglycerides from the body. c. saturated fats clear out the blood vessels. d. fat nerves transmit signals. , this is for apex in summer school.