The opsin made from the OPN1SW gene is more sensitive to light in the blue/violet part of the visible spectrum (short-wavelength light), and cones with this pigment are called short-wavelength-sensitive or S cones. Genetic changes involving the OPN1LW or OPN1MW gene cause red-green color vision defects.
Acoustic fencing, to reduce noise pollution. Privacy fencing, to provide privacy and security. Temporary fencing, to provide safety, security, and to direct movement; wherever temporary access control is required, especially on building and construction sites. Perimeter fencing, to prevent trespassing or theft and/or to keep children and pets from wandering away.
Privacy plants act as fences when planted as hedges or grouped together to block unwanted views of roof lines and multistory buildings. Good plants for this use are evergreen, with a dense growth habit that prevents gaps in the privacy screen during the cooler months of the year.ood plants for this use are evergreen, with a dense growth habit that prevents gaps in the privacy screen during the cooler months of the year.