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What is the most significant reason for the dramatic increase in expected life span over the last 100 years?

What is the most significant reason for the dramatic increase in expected life span over the last 100 years?
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What is the most significant reason for the dramatic increase in expected life span over the last 100 years?

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User Luis Perez
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1 Answer

1 vote

Answer:

The development of antibiotics and immunizations.

Step-by-step explanation:

answered
User Samuraisam
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