Tough e noughâ¢ race bibs are a line of tear and water resistant bibs printed on a biodegradable paper laminate. 2: Are Tough e noughâ¢ race bibs as durable as synthetic paper (Tyvek)? Tough e noughâ¢ race bibs are as durable as bibs made on synthetic paper because they are made with an inner layer of plastic film.un a greener race with Tough enoughâ¢ biodegradable race bibs. Introducing a new line of tear and water resistant race bibs printed on a biodegradable paper laminate.
A single daisy or sunflower, for example, is not a flower but a flower head âan inflorescence composed of numerous flowers (or florets). An inflorescence may include specialized stems and modified leaves known as bracts.
Before understanding what a bract is, it is helpful to understand what it is not. First, it is not a part of the flower by definition. Complete flowers are composed of four parts: sepals, petals, stamens, and pistils. A bract is none of these. Neither is a bract a leaf, although it is sometimes defined as a leaflike structure. Bracts usually differ in shape or color from leaves, and they function differently. Leaves may be anywhere along the stem while bracts are generally located on a stem just below a flower, a flower stalk, or an inflorescence.