<span>Hi,
What disease makes the air sacs in the lungs less elastic reducing their ability to absorb oxygen ?
</span><span>chronic bronchitis and emphysema (COPD)</span>
Answer: By having variety in what you eat, you give your body a balanced amount of different properties your food has.
Explanation:
By contracting, muscles pull on bones and allow the body to move. Muscles can only contract. They cannot actively extend, though they can move or relax back into the non-contracted neutral position. Therefore, to move bones in opposite directions, pairs of muscles must work in opposition
HIV or Human Immunodeficiency Virus is a viral infection, which directly attacks Leukocytes (white blood cells). Leukocytes are the cells responsible for fighting infections that break past the skin. If the infection is not controlled it can cause a range of disorder's which form a syndrome called AIDS or Acquired Immunodeficiency Disorder Syndrome. When this happen common infection for such thing as a common cold can turn lethal as the body is unable to fight pathogen's effectively.
