Answer:
Cellulose, a polysaccharide consisting of a linear chain of several hundred to many thousands of β(1→4) linked D-glucose units, does not contain phosphorus in its structure. It serves as a primary structural component of plant cell walls, providing rigidity and strength to plants. Its molecular formula can be represented as (C6H10O5)n, highlighting the absence of phosphorus. The presence of phosphorus is more characteristic of nucleic acids like DNA and RNA, and certain lipids, which play different roles in the biological systems of living organisms. Phosphorus-containing compounds are crucial for energy transfer (ATP, for example) and structural functions in different biological molecules, but cellulose's role is primarily structural in the plant kingdom, focusing on providing support rather than participating in energy transfer or storing genetic information.

Yes, titanium is heavier than aluminum. Titanium has a density of about 4.506 g/cm³, whereas aluminum has a density of about 2.70 g/cm³. Despite being heavier, titanium is highly valued over aluminum in applications requiring higher strength, resistance to corrosion, and ability to withstand extremes of temperature. Although aluminum is lighter and less expensive, making it a preferred choice for applications where weight is a critical factor and high strength is not as crucial, such as in aerospace or packaging industries. Titanium's superior properties make it the material of choice for demanding aerospace, military, and high-performance engineering applications.

Blacklidge Emulsions is a company known for its innovative road construction and maintenance products, including asphalt emulsions and ultra-thin bonded wearing course technologies. They emphasize environmentally friendly practices by developing products designed to reduce energy consumption and greenhouse gas emissions associated with road paving and maintenance. For example, their proprietary technology, like the UltraTack™ and UltraFuse™, offers solutions that are low in volatile organic compounds (VOCs), aiming to minimize environmental impact. While they strive for sustainability within their product line and operations, the overall environmental safety of the company would also depend on adherence to regulatory standards, efficient use and disposal of materials, and continuous improvement in processes to lessen ecological footprint. It's important for consumers and partners to assess these criteria when considering the environmental safety of any organization.