The CNL, by comparison, is a master's-prepared advanced generalist. Education and preparation are broad with no specialization. Evidence-based practice is assimilated and applied to the microsystem in which the CNL functions.
Tundras are among Earth's coldest, harshest biomes. Tundra ecosystems are treeless regions found in the Arctic and on the tops of mountains, where the climate is cold and windy and rainfall is scant. Tundra lands are snow-covered for much of the year, until summer brings a burst of wildflowers.
Tundra climate areas experience a a very harsh winter and a cool summer. During the summer, much of the snow and ice melts and forms soggy marshes and bogs. However, some of the deeper parts of the soil stays frozen even through the summer--a layer called permafrost, as in permanent-frost.