2) The fleas life cycle discussed - the flea life cycle diagram explained in full. 2a) Fleas life cycle 1 - The adult flea lays her eggs on the host animal. 2b) Fleas life cycle 2 - The egg falls off the animal's skin and into the local environment of the host animal. 2c) Fleas life cycle 3 - The flea egg hatches, releasing a first stage (stage 1) flea larva.
What is the Black Lung Benefits Act? The federal government established the Black Lung Benefits Act to assist coal miners who have developed pneumoconiosis, known as Black Lung Disease. The act provides monthly payments and medical benefits to coal miners who are totally disabled by the disease.
Definition. Black lung disease is the common name for coal workers' pneumoconiosis (CWP) or anthracosis, a lung disease of older workers in the coal industry, caused by inhalation, over many years, of small amounts of coal dust.he only way to prevent black lung disease is to avoid long-term exposure to coal dust. Coal mines may help prevent the condition by lowering coal dust levels and providing protective clothes to coal miners. A light micrograph of a human lung containing particles of inspired coal dust (anthracosis).