Cercospora. Cercospora is the most common of the many diseases of a sweet gum tree, according to the Florida Department of Agriculture and Consumer Services. Cercospora is a fungal spot disease that produces dark brown, bordered, angular to circular spots 2 to 10 mm in diameter on both sides of leaves.rtist's Conk. Artist's conk (Ganoderma applanatum) is a fungal disease of a sweet gum tree that causes wood rot, according to the University of California IPM Online. Artist's conk infects trees by entering through wounds. White rot occurs in roots and trunks.
Vision and Age Infant Eyes Eye Development. Even in the womb babies can tell the difference between light and dark. And at birth, they see shapes by following the lines where light and dark meet. Yet, they are several weeks old before they can see their first primary color â red.
Dr. Goei explains that a newborn infant usually sees very high-contrast shapes and movement and color such as black, white, and red, she says. When the majority of babies are born, their eyes move in different directions, Dr. Goei says. By 3 to 6 months of age, babies are using their eyes together very nicely. If the eyes seem to cross all the time, that's not normal. It should be very apparent that the child can use both eyes simultaneously..