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
For Better or For Worse gives advice to Elizabeth and Anthony, who are both touched by her devotion to Jim. The strip concluded with Iris saying "It's a promise that should last a lifetime. It defines you as a person and describes your soul. It's a promise to be there, one for the other, no matter what happens, no matter who falls ... For better or for worse, my dears ... for better or for worse". This final daily strip had a message from Lynn Johnston saying, "This concludes my story ... with grateful thanks to everyone who has made this all possible. ~Lynn Johnston".