According to the Department of Education 180 is the minimum number of instructional days California requires of its public schools. The 180 days doesn`t include in-service days for teachers.
Loon, Arctic also Black-throated Loon also Black-Throated Diver Gavia arctica Found: North America (Alaska), Europe, Asia. The Arctic Loon has white underparts. Breeding has black back with white bars; black face; black sides of throat with white stripes; dark green throat.
The Old World porcupines live in southern Europe, Asia (western and southern), and most of Africa. They are large, terrestrial, and strictly nocturnal. In taxonomic terms, they form the family Hystricidae. The New World porcupines are indigenous to North America and northern South America.