Spider mites become a real problem on tomatoes when the weather becomes hot. The generation time of the tiny sucking insects becomes as short as four or five days. Spider mites feeding cause the leaves to have a dusty faded look. In severe infestations, tiny webs cover the plant.
exists and is an alternate of. Merge this question into. Split and merge into it. Answer by Isadora Duncan. Confidence votes 51.8K. Anthracite is a teal-grey color but can range anywhere from black, to blue to grey and green. Anthracite is a hard, compact mineral coal that has a high luster and carbon content.
Anthracite accounts for about 1% of global coal reserves, and is mined in only a few countries around the world. China accounts for the majority of global production; other producers are Russia, Ukraine, North Korea, South Africa, Vietnam, the UK, Australia and the US.nthracite ignites with difficulty and burns with a short, blue, and smokeless flame. Anthracite is categorized into standard grade, which is used mainly in power generation, and high grade (HG) and ultra high grade (UHG) , the principal uses of which are in the metallurgy sector.