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.
Your baby should be able to follow a moving object with his/her eyes, if it is not moving too fast. Babies are now able to focus and pay attention to the face of a parent or other person near them. Your baby will start reaching for things he/she sees. Four to six months Visual acuity is approximately 20/60. Your baby can now see all colors, although color vision is not as sensitive as an adults. He/she will turn his/her head to look at bright colors and lights. Your baby should recognize objects that he/she has seen and played with before. Babies can now see a three-dimensional view of the world. This allows them to reach and grasp for a finger or rattle, clap hands, or transfer objects from one hand to another. Seven to twelve months Visual acuity is now about 20/30.