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.
Black lung disease and silicosis . Black lung is caused when coal dust blocks the lungs, causing severe and permanent breathing problems. Underground coal miners, and children and women who work separating rocks from coal, are most affected by black lung. Silicosis is caused by exposure to silica dust. Silica is a common mineral released from sand and rocks during mining, exposing many miners to harm.