Infrastructure means the basic structure of an organization or system. A company's infrastructure would include all the fixed assets, i.e., the building, equipment, machinery and tools required to manufacture their product. Although people are not fixed assets they would be included in the company's infrastructure too.
Rarely a serious problem. Look-alikes: Jumping oak gall, tubakia leaf spot, oak leaf blister, other fungal leaf spots. Jumping oak gall Brown leaves appear on trees in the white oak group in late spring. Severe infections may cause the leaves to turn black, curl up and fall. On the underside are brown galls with the larva of a small wasp inside.
1 Normal aging. 2  As many plants age, the lower leaves will turn yellow and drop off as a normal part of growth. 3  This is especially true of foliage plants like dieffenbachia and dracaena. 4  In this case, don't worry.5  If the plant becomes too leggy, consider trimming back the main stem to promote new growth and bushiness. Normal aging. 2  As many plants age, the lower leaves will turn yellow and drop off as a normal part of growth. 3  This is especially true of foliage plants like dieffenbachia and dracaena. 4  In this case, don't worry.