They cultivate and harvest crops in ways that preserve the fertility of soil and keep it from eroding, use water without overtaxing the supply, and preserve woods and streams on their land.
The Army Corps of Engineers, which built and operates the 57-year-old dam, learned several years ago that it had three serious problems: it was in danger of eroding internally; water could flow over its top in the most extreme flood season; and a fault underneath it was not inactive after all but could produce a strong earthquake.
Zhou et al. [48] suggested that OCPs were released from wet deposits or from soil eroding into water with heavy rain, in the Zhejiang province (east China).
It is essential that on any eroding surface water flows across the surface without interference from any equipment designed to collect runoff and sediment.
It has become a scourge of wetlands, eroding their water-storage space, jeopardizing their water quality, and harming their biodiversity [4],[5].
They are eroded by water but normally dry; only after heavy rainstorms in the Red Sea Hills do they carry torrents.
At Litchfield,u o an abandoned mound can be seen in cross-section revealing a warren of chambers and passageways, like seaside rocks that have been pitted and eroded by water.
He felt the solitude, the silence of the bare rocks eroded by water, the uneasiness seeping out of all the fissures and secret holes, and he began to walk faster, then run.
ARRIVING by ferry or hydrofoil at Ponza, an island in the Tyrrhenian Sea, the boat trims the island's eastern coast, a vista of sheer tuff cliffs bleached white by the sun and eroded by water and wind.
The oldest previously known spherules fell to Earth 190 million years ago, but they were badly eroded by water.
