I believe the answer is D. Toothbrushing and flossing can do all of the above.
What is time dilation?
Answer: Time dilation is the difference of time between two events. This events are measured by two different observers that are moving relatively to each other or that are present two different places.
I hope it helps, Regards.
<span>Skeletal muscle contractions pull on tendons that are attached to bones. If contraction of the muscle causes the muscle to shorten, the bone, the body part will move.</span>
No. Since you don't have to think about your heart beating, which is made of cardiac muscles. <span />
