Pls which is a true statement about air quality? a good air quality is shown by high levels of smog. b bacteria is a major cause of poor air quality. c water treatment plants measure the air quality. d the epa measures air pollution levels daily.

Why do mountaineers become breathless as they reach high altitudes

In cellular biology, what is the definition of the word specialized? te o a. carried across the cell membrane by a specific protein a o b. a structure within a eukaryotic cell that performs a specific function o c. adapted to a specific function or condition es essere beste ser bendere s b tele ee o d. containing unique dna ser eeseen les, e nde este ses see ste submit e

Do you think humans have a moral obligation to preserve the habitat of the chimpanzee