It's scary to think that over three hundred and fifty children die in swimming pool drownings each year, with sixty to seventy percent of those drownings coming from ground-level residential pools.
Reduces air pollution: Ethanol reduces the amount of carbon monoxide and other ground-level toxic air pollutants as compared to conventional unleaded gasoline by about 10 to 30 percent.
Air pollution: Vehicles and industrial waste remain the biggest contributors to ground-level ozone.
Carbon dioxide contributes to ground-level ozone, like the analogy of the greenhouse.
Likewise, the ground-level ozone warms the planet and the oceans.
Fo~r setting out a mastaba with sloping sides, on an irregular foundation at different levels, hollow corner walls were built outside the place of each corner; the distances of the faces at the above-ground level were marked on the inner faces of the walls; the above-ground level was also marked; then sloping lines at the intended angle of the face were drawn downward from the ground-level measures, and each face was set out so as to MALLETS - 2
Of the great church hardly any fragments rise above ground-level, but the chapter-house, refectory and cloisters remain in part, and the ivy-clad ruins stand in a beautiful setting of woodland.