Subarctic climate is found at 60 degree north latitude.
This is because a latitude of 60°N corresponds to a subarctic climate according to the Koppen Classification and the vegetation consists mostly of conifers.
This region is described by cool summers, low precipitation and moderate humidity or long cold winters and short, warm to cool summers.
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c. a densely populated community that only occurs in shallow water near the shoreline.
Explanation:
The corals are found in shallow and dense waters and reef corals are only formed in the shallow waters and mostly occur in the tropical and the subtropical waters. And occur in colonies of colonies of polyps and held together by the calcium carbonates and are found near the shores and provides protection to the shoreline.
The Mesosphere is the layer of the atmosphere that protects the Earth from meteoroids. It is also the coldest layer of the atmosphere. Below it is the stratosphere and above it is the thermosphere.