What could cause an outbreak of malaria in a country ...

What could cause an outbreak of malaria in a country after it had been eliminated?

1 mosquitoes become resistant to insecticides
2 migration of population due to war
3 malarial parasites become resistant to quinine (the medicine for malaria)

A. 1, 2 and 3

B. 1 and 3 only

C. 2 and 3 only

D. 1 and 2 only

Select your answer:

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This lubricates the joints and prevents friction.

A. cartilage

B. ligaments

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Statement A: Actual staining of cell or cellular components do not occur until buffer is added

Statement B: Staining reactions are pH-independent

A. Statement A is correct statement b is incorrect

B. Statement B is correct statement A is incorrect

C. Both are incorrect

D. Both are correct