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Type: Multiple-Choice
Category: Circulatory and Immune Systems
Level: Grade 7
Author: dphillips3006
Last Modified: 6 years ago

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Circulatory and Immune Systems Question

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Grade 7 Circulatory and Immune Systems

Platelets have a life span of
  1. 10 t o 12 months.
  2. 5 to 9 days.
  3. 2 to 3 weeks.
  4. 1 year.