instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Sediment consists of _ visually distinct floc layers.
answer:
two


question:
Giraffes have two horns and _ or three knobs.
answer:
two


question:
Butterflies possess a complex life cycle that requires _ metamorphoses to complete.
answer:

four