A wood product is considered environmentally preferable if it has which of the following attributes?

A wood product is considered environmentally preferable primarily when it is sustainably grown and harvested. This attribute ensures that the extraction of wood does not deplete resources or harm ecosystems, promoting responsible forestry practices. Sustainable forestry includes methods that maintain the biodiversity of forests, protect wildlife habitats, and prevent soil erosion, ultimately contributing positively to environmental health.

When wood is sourced sustainably, it often involves certifications from reputable organizations that verify forest management practices, ensuring they meet specific environmental standards. This responsible sourcing is integral to the overall sustainability goals outlined in LEED criteria, which aim to reduce the negative impacts of building materials on the environment.

The other attributes listed, while they may enhance the functionality or economic aspects of wood products, do not necessarily contribute to their environmental preference. For instance, chemical treatments can introduce harmful substances that may impact indoor air quality or the surrounding ecosystem. Increased density improves insulation but doesn't address the ecological implications of sourcing the material. Cost-effectiveness in production focuses mainly on economic benefits and may not have any direct correlation to the environmental implications of wood sourcing or harvesting practices.