jonathan252 jonathan252

08-10-2022
Biology

contestada

What contribution did Jonas Salk make to science in the 1950s?
O A.
He invented DDT, the "miracle" pesticide.
• B.
He designed the first US satellite.
O c.
He developed smaller computers.
• D.
He created a vaccine against polio.

La respuesta es (D) the answer is D

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