To give bike frames their structural strength manufacturers employ a variety of unidirectional carbon fiber prepreg sheets. Each sheet is designated by the fiber orientation as being either a 0Â°, a plus 45Â°, a minus 45Â°, and/or a plus or minus 30Â°.
Sawfish are shark-like rays characterized by long, tooth-studded snouts. Individuals range in size from 2 to 20 feet and can weigh more than 1,000 pounds. Like most sharks and rays, sawfish are exceptionally vulnerable to overexploitation due to their slow growth, late maturity, and small number of young. All seven species worldwide are classified by the International Union for Conservation of Nature (IUCN) as Critically Endangered.
Making the world better, one answer at a time. Cnidarians are important in balancing the ecosystem, as all other organisms are. If there were a decrease in numbers, other living things which rely on cnidarians would also have problems.For example, when a jellyfish kills a fish for food, it is actually helping the other populations of fish that would need to compete with the one slain for food, territory, etc.es, many species of cnidarians have powerful stinging cells and potent venom strong enough to cause injury and or death to humans. These include the Portuguese man of war, th â¦ e sea wasp, lion's mane jellyfish, fire coral, and the carpet sea anemone.