Sentences with phrase «surface markers provide»

Surface markers provide insurance against possible separation from the boat.

Not exact matches

Sunspots, markers of magnetic activity on the sun's surface, provide a visual proxy for the cycle's evolution; they appear in droves at maximum and all but disappear at minimum.
Sunspots, markers of magnetic activity on the sun's surface, provide a visual proxy to mark the cycle's evolution, appearing in droves at maximum and all but disappearing at minimum.
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