instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Most chick mortality occurs within _ days after hatching.
answer:
six


question:
Melanocytes are dendritic and are distributed roughly _ per six basal cells.
answer:
one


question:
Scientists spend six to _ hours a day in the water and often venture out at night as well.
answer:

nine