Poaceae groups, using the C3 and C4 photosynthetic pathways for carbon fixation. The C4 grasses have a photosynthetic pathway, linked to specialized Kranz leaf anatomy, which allows for increased water use efficiency, rendering them better adapted to hot, arid environments and those lacking in carbon dioxide. The C3 grasses are referred to as "cool-season" grasses, while the C4 plants are considered "warm-season" grasses. The grass family is one of the most widely distributed and abundant groups of plants on Earth. Grasses are found on every continent, including Antarctica with the presence of Antarctic hair grass on the Antarctic Peninsula. Grasses are
U Should've Known Better April 2004, and features rapper Young Buck appears in the video as her love interest. The video follows the single's topic of a misunderstandings in a relationship, showing Monica as the girlfriend, with the boyfriend held in a Mexico hold-prison. With Monica getting help from a guy friend, her boyfriend's best friend sees them and thinks otherwise. Monica drives through the desert of Mexico to get him out of prison. The video ends with Monica and her boyfriend hugging at the end and going home together. The "U Should've Known Better" video premiered worldwide in May 2004 at the end