1 Nearly one-fifth (19%) of juvenile violent crimes occur in the 4 hours between 3 p.m. and 7 p.m. on school days. 2  A smaller proportion of juvenile violent crime (15%) occurs during the standard juvenile curfew hours of 10 p.m. to 6 a.m. (inclusive of both school and nonschool days).
Cause. Sooty mold is a fungal disease initiated by a combination of feeding insects, such as whiteflies and aphids, and fungi. Insects feed on the gardenia for the sap in the foliage and stems. The insects take in large amounts of sap and expel the leftover as a sticky liquid called honeydew.
The incomplete combustion of a hydrocarbon usually produces a sooty flame due to the presence of carbon (C), or soot, as a product of the incomplete combustion reaction. The hydrogen in the hydrocarbon will be oxidised to water, H 2 O, but the carbon in the hydrocarbon may, or may not, be oxidised to carbon monoxide gas (CO (g)).