Sympatric speciation is the formation of two or more descendant species from a single ancestral species all occupying the same geographic location. Often-cited examples of sympatric speciation are found in insects that become dependent on different host plants in the same area.
Rice noodles are a type of semi-transparent pasta made from rice flour and water. Most are very long and thin, but you can also find flat rice noodles, as well. These noodles cook notably fast and can actually turn to mush if cooked for too long, so it's important to know how to cook them properly.
vietnamese noodle soup by Delora Report definition; Vietnamese rice noodle, often eaten with Sriricha hot sause and Hoisin sauce. The broth is normally do-it-yourself, by boiling chicken stock in water. The beef that you can get in pho may be virtually anything: pork, beef, tripe, chicken, barbeque...