If the Copyright Office has no confirmation that a composer or song-writer is still living and it has been 75 years since the first copyright protection order was granted, or 100 years since the recognized creation date of the piece, it becomes public domain.
Exposure to blue-green algae can cause rashes, skin and eye irritation, allergic reactions, gastrointestinal upset, and other effects. At high levels, exposure can result in serious illness or death.
PROJECT BACKGROUND. The link between blue-green algae and water quality. Cyanobacteria (blue-green algae) cause a multitude of water-quality concerns, including the potential to produce toxins and taste-and-odor (T&O) compounds.lthough blooms can occur naturally as part of the yearly cycle of algal dynamics in a water body, some algae, such as Cyanobacteria (blue-green algae), can develop nuisance blooms.