B cells produce antigen
t cell are helper,killer,memory cells
they hold memory of pathogens i the system
Answer: 1,260 cubic mm
(1/6)(7,560) = 7,560/6 = 1,260
multiplying by 1/6 is the same as dividing by 6 (6 and 1/6 are reciprocals)
Answer:
The history of GIS all started in 1854. Cholera hit the city of London, England. British physician John Snow began mapping outbreak locations, roads, property boundaries, and water lines.
John Snow’s Cholera map was a major event connecting geography and public health safety. Not only was this the beginning of spatial analysis, but it also marked the start of a whole field of study: Epidemiology – the study of the spread of disease.
To this date, John Snow is known as the father of epidemiology. The work of John Snow demonstrated that GIS is a problem-solving tool. He put geographic layers on a paper map and made a life-saving discovery.
Explanation:
Answer:
Its D. role of carbon dioxide in photosynthesis.
Explanation:
I know its right bc I just got that question.
<span>positive self talk is the best source of internal motivation.</span>
