Naselle Highlands Natural Resources Conservation Area (dnr.wa.gov)Naselle Highlands NRCA contains mature conifer forest habitat including platform trees supporting marbled murrelet nesting sites. The murrelet is a seabird that nests inland on the broad branches of old-growth trees.
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Cartesian coordinate system (Wikipedia)In geometry, a Cartesian coordinate system (UK: /kɑːrˈtiːzjən/, US: /kɑːrˈtiːʒən/) in a plane is a coordinate system that specifies each point uniquely by a pair of real numbers called coordinates, which are the signed distances to the point from two fixed perpendicular oriented lines, called coordinate lines, coordinate axes or just axes (plural of axis) of the system. The point where they meet is called the origin and has (0, 0) as coordinates.