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.
While wooden fences can last up to 20 years, they do tend to be the most expensive option, and the price will be at the very top of the price range listed above. For a deeper comparison, please see Wood Fence Vs. Chain Link Fence. Costs Of Professionally Installing Privacy Fencing. Homeowners with minimal DIY experience can install a fence on their own. However, even with all of the materials on hand, itâs a big challenge to install a privacy fence.