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when do spindle fibers first become visible?

question options:

prophase

telophase

anaphase

metaphase

Barbara is converting 78°f to degrees celsius. first, she subtracts 32 from 78. what is the next step?

How are the tortoises that darwin observed on the galápagos islands similar to the anoles that losos studied

Radiometric dating is used to tell the absolute age of materials by studying the decay rate of radioactive isotopes. the decay rates of isotopes are constant and are expressed as .