Atelectasis is a collapsed lung. Explain how a pneumothorax might result in a collapsed lung and what should be done to restore the negative pressure of the pleural cavity.

This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic

Amouse that is homozygous for the dominant trait has the genotype . it has . a mouse that is homozygous for the recessive trait has the genotype . it has . image of fur color of mice

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?