What are ropes made from manila or cotton that are twisted together to form strands classified as?

Ropes made from manila or cotton that are twisted together to form strands are classified as natural fibers. Natural fibers originate from plants or animals, in this case, manila being sourced from the abaca plant and cotton from the cotton plant. These fibers are biodegradable and have been used historically for their durability and usefulness in various applications, including firefighting.

Synthetic fibers, on the other hand, are made from chemical processes and are designed to mimic or improve upon the properties of natural fibers, which is not the case here. Artificial fibers generally refer to synthetic options made from manufactured substances, and polypropylene is a specific type of synthetic material used in some rope production but does not classify as a natural source. Therefore, the classification of ropes made from manila or cotton as natural fibers accurately reflects their origin and properties.