The human eye has three layers of eye tissue: the fibrous layer, the vascular layer, and the retina. Each of these layers performs a different function in helping a human see or in eye, as well as forms a place for muscles to attach to. The vascular layer protects portions of the eye. The fibrous layer of eye tissue allows light to enter the ourishes the eye and controls how much light comes into it. The retina is the section of the eye that allows a person to see. The fibrous layer has two distinct parts.
Noun. 1. alluvial soil-a fine-grained fertile soil deposited by water flowing over flood plains or in river beds. alluvial deposit, alluvial sediment, alluvium, alluvion-clay or silt or gravel carried by rushing streams and deposited where the stream slows down.. alluvial soil-a fine-grained fertile soil deposited by water flowing over flood plains or in river beds. alluvial deposit, alluvial sediment, alluvium, alluvion-clay or silt or gravel carried by rushing streams and deposited where the stream slows down.
This course-textured soil is comprised of sand particles between medium- and coarse-sized particles. Clayey or fine textured soil has clay particles that are also the smallest particles of the three types, and the physical properties of soil containing clay makes the soil gummy and sticky. Silt has moderate-sized particles and a smooth, flour-like texture. Loam soil consists of clay, silt and sand sized particles. Soil texture can also be identified by feel; clay is sticky, silt is smooth and sand is gritty.