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Curran, Mary Carla; Richlen, Mindy L. – Science Activities: Projects and Curriculum Ideas in STEM Classrooms, 2019
Marine phytoplankton comprise the foundation of oceanic food webs and generate most of the Earth's oxygen. Of the many phytoplankton species in the ocean, a few dozen produce potent toxins, and at high concentrations can form what are called Harmful Algal Blooms (HABs) or "red tides" that can discolor marine waters. Managers and…
Descriptors: Marine Biology, Hazardous Materials, Science Activities, Poisoning
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Miller, Roxanne Greitz – Science Scope, 2008
Commonly referred to as CFLs, compact fluorescent light bulbs are rapidly replacing traditional incandescent light bulbs for residential use. However, controversy and even comic parody have arisen surrounding CFL use. CFLs contain small amounts of mercury, and several public forums and news agencies have been announcing that the breakage of a CFL…
Descriptors: Lighting, Energy Conservation, Hazardous Materials, Poisoning