These infections are called
"opportunistic infections" because
they take advantage of weak
immune systems.
Skinfold calipers have been used to estimate body fat for over 50 years
Answer:
Oxygen passes quickly through this air-blood barrier into the blood in the capillaries. Similarly, carbon dioxide passes from the blood into the alveoli and is then exhaled.
Explanation:
Answer:
When you first put a piece of food in your mouth, it is first grinded by your teeth, then saliva comes in to help you break down your food, the more you chew the more digestive enzymes occur, these enzymes are extremely important, they help your body take in nutrients from what you eat. This is why it's important to chew your food thoroughly before you swallow,
