Roots, Stems, and Leaves ï§ In vascular plants, a system of vascular tissue reinforced by lignin distributes materials through leaves, stems, and roots of sporophytes â¢ Xylem: Distributes water and mineralsâ¢ Phloem: Distributes products of photosynthesis.
Hereâs the scenario: * Gutter guards were placed below a downspout that feeds from an upper-roof onto a first floor roof surface with asphalt shingles. This is the sole downspout for a roof section that is approximately 300 square feet. The building on which the guards were tested is 3-stories.
The balusters on a guard rail must be close enough so that a 4-in. sphere cannot slip through. But the balusters on a raked handrail can be spaced wider; and the spandrel space between the bottom rail and the tread can allow for a 6-in. sphere.