\left. \begin{array} { l } { \frac { x } { a } + \frac { y } { b } = 2 } \\ { a x - b y = a ^ { 2 } - b ^ { 2 } } \end{array} \right.
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\left. \begin{array} { l } { \frac { x } { a } + \frac { y } { b } = 2 } \\ { a x
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Answer:
Agriculture describes the practice of growing crops or raising animals. Someone who works as a farmer is in the agriculture industry. The Latin root of agriculture is agri, or "field," plus cultura, "cultivation." Cultivating a piece of land, or planting and growing food plants on it, is largely what agriculture means.
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Step-by-step explanation:
Healthy carriers: These are the persons who harbor the microorganism bud had never suffered from any disease by it.
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Sites of carriage:
Nasal: Staphylococcus aureus.
Nasopharyngeal: meningococcus, Bordetella.
Urinary: Salmonella.
Fecal: Salmonella.
Serum: hepatitis B.
Hands: Klebsiella, Pseudomonas, Staphylococcus.