marithza13
marithza13 marithza13
  • 16-10-2018
  • Social Studies
contestada

what do scientists often create when they cannot easily study the real thing
A. a theory
B. a model
C. a trend
D. a dependent variable

Respuesta :

brownie912 brownie912
  • 17-10-2018
Not completely sure but I think it's B
Answer Link

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