What happens to the density of air as altitude decreases? A. The Density of air decreases. B. The density of air increase. C. The density of air stays the same. D. The density of air changes randomly.

Larry is taking a walk in the park, the pollen in the air makes him sneeze consistently what line of defense is his immune system exhibiting

Group of genes that encode molecules found in all body cells, creating a biochemical “fingerprint” that serves as the “id” for cells so that they are marked as “self” a) deoxyribonucleic acid (dna) b) entry inhibitors c) major histocompatibility complex (mhc) d) non-nucleoside reverse transcription inhibitors (nnrtis)

Aperson has had a good _ of life if they are still at the age of 95.