The brown color and streaks are ice algae that live on the underside of the ice and in the interface between the ice and snow.
(The brown color and streaks; are; ice algae that live on the underside of the ice and in the interface between the ice and snow) (ice algae; live; L:on the underside of the ice and in the interface between the ice and snow)
The brown color and streaks ice algae
are live
ice algae that live on the underside of the ice and in the interface between the ice and snow
L:on the underside of the ice and in the interface between the ice and snow