HELP PLZ. Select the correct answer. Which of the following describes external respiration? OA. Oxygen diffuses out of the blood into the tissue cells. OB. Carbon dioxide diffuses from the tissue cells into the blood, There is an exchange of gases between the lung alveoli and the blood capillaries O D. All of the above

God to do a cool down after working out.  hope this .      cheers!

The answer you're looking for is washing your hands. "at this late date, we all expect our doctors to wash their hands before examining us or performing an operation in order to prevent the spread of infection. surprisingly, physicians did not begin to acknowledge the lifesaving power of this simple act until 1847.it was then that dr. semmelweis began exhorting his fellow physicians at the famed vienna general hospital (allgemeines krankenhaus) to wash up before examining women about to deliver babies. his plea was far more than aesthetic; it was a matter of life and death and to prevent a deadly malady known as “childbed” or puerperal (from the latin words for child and parent) fever." 

There is a food out there and its call a star fruit. and 1% milk

Pretty much everywhere: walking requires friction, driving around curves, steering a car with the steering wheel, starting fire with a stick, objects moving along a conveyer belt.