Answer:
19 enclosures
Explanation:
To calculate the number of enclosures needed, we can divide the total number of birds by the number of birds per enclosure:

Substitute the given value:

Number of enclosures = 147 birds / 8 birds per enclosure
Number of enclosures = 18.375
Since we cannot have parts of enclosures, we round 18.375 up to 19.
Therefore, the zoo needs to use 19 enclosures to house all of the birds.