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.
- September 22, 2014. If youâre researching the different types of privacy fences, then one of the decisions you will need to make is which kind of material to use. Wood is perhaps the most popular choice for alltypes of privacy fences â and with good reason. Affordability â wood is fairly inexpensive, making it a good choice for those on a budget.