Your answer is B. hope this helps
The exosphere is the thinnest layer of earths atmosphere. This also the layer of earth's atmosphere that is closest to space.
Explanation:
partially weathered parent material
Answer:Human evolution is the evolutionary process that led to the emergence of anatomically modern humans, beginning with the evolutionary history of primates—in particular genus Homo—and leading to the emergence of Homo sapiens as a distinct species of the hominid family, ... Human evolution from its first separation from the last common ancestor
Explanation:
Answer:
Because flu viruses evolve so quickly, last year's vaccine may not protect you from this year's viruses. New flu vaccines are released every year to keep up with rapidly adapting flu viruses.