In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
--------
Question: Morocco has _ perennial rivers and many dams have been built with potential for power generation.

Answer: four


Question: Water is able to diffuse freely between the _ cells.

Answer: two


Question: Coyotes typically have _ toes on each forefoot and four toes on each hind foot.

Answer:
five