The body obtains vitamin A in two ways. One is by manufacturing it from carotene, a vitamin precursor found in such vegetables as carrots, broccoli, squash, spinach, kale, and sweet potatoes. The other is by absorbing ready-made vitamin A from plant-eating organisms.
It takes a really good glue to hold picture frames together. The common glues that you see in hardware stores just don't cut it. Picture frames glued up with these glues will snap apart very easily. Because these picture frame clamps are not professional vises, it is even more important to use a really good glue.
Usually picture frame sizes are measured by width and height and the picture frame sizing will refer to the size of the image opening and not the exterior dimensions. For example if your photograph measures 8 x 10 you may need an 8 x 10 frame. Standard Frame Sizes: (General and Art)