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Cyanobacteria (blue-green algae) bloom on Lake Erie (United States) in 2009. These kinds of algae can cause harmful algal bloom. A harmful algal bloom (HAB), or excessive algae growth, sometimes called a red tide in marine environments, is an algal bloom that causes negative impacts to other organisms by production of natural algae-produced toxins, water deoxygenation, mechanical damage to ...
Levels of 0.5–1 mg/L are mild, 1–2 mg/L are moderate, 2–3 mg/L are severe, and greater than 3 mg/L generally result in death. [2] If exposure is suspected, the person should be removed from the source of the exposure and decontaminated. [3] Treatment involves supportive care and giving the person 100% oxygen.
40 C.F.R.: Appendix A to Part 355—The List of Extremely Hazardous Substances and Their Threshold Planning Quantities (PDF) (July 1, 2008 ed.), Government Printing Office, archived from the original (PDF) on 2012-02-25
This is the list of Schedule I controlled substances in the United States as defined by the Controlled Substances Act. [1] The following findings are required for substances to be placed in this schedule: [2]
“Personally, if I had to choose being bitten by a newborn copperhead or an adult, I would choose a newborn because of the potentially much smaller quantity of venom.” Bites are rarely fatal.
Based on risk assessment, a safe upper intake level of 250 μg (10,000 IU) per day in healthy adults has been suggested by non-government authors. [ 5 ] [ 6 ] Blood levels of 25-hydroxyvitamin D necessary to cause adverse effects in adults are thought to be greater than about 150 ng/mL, leading the Endocrine Society to suggest an upper limit ...
Adults and children are igniting their own fireworks, but the “oohs” and “aahs” quickly turned to agony and a trip to the emergency room for some. This type of firework causes the most ...
IARC group 1 Carcinogens are substances, chemical mixtures, and exposure circumstances which have been classified as carcinogenic to humans by the International Agency for Research on Cancer (IARC). [1]