| Surface flow normally begins in just a few areas, especially dips or hollows near the stream. |
| Surface fires then are lit to kill off saplings, reduce fuel loads, enrich the soil with nutrients, and bring fire back to the forest. |
| Surface water bodies like ponds and tanks are the perennial breeding sources. |
| Surface deposits are covering materials on seed coats and are apparently derived from the endocarp. |
| Surface pretreatments, such as chromating or phosphating, are necessary to ensure good adherence of paint or lacquer finishes. |
| Surface wind at the time of the rollback of the gantry surrounding the Boeing Delta II launch vehicle was as high as 36 knots. |
