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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 ...
Females grow at a faster rate than the males and adult characteristics start to form at a length of 15 mm (1 in). [29] [30] Females continue to outgrow the male throughout their lives reaching a length of 12 to 30 in (30 to 76 cm). Usually the freshwater drum weighs 2–10 lb (0.91–4.54 kg), but they can reach well over 36 lb (16 kg). [22]
Weight vs. length for black drum based on data from the Calcasieu Estuary, Louisiana. (Fall female curve is obscured by the spring female curve. Data are from Jenkins, 2004) Length vs. age for black drum from two Gulf Coast locations. Annual growth rate for ages 1–3 is 100–150 mm/year and then slows to 10–50 mm/year for ages 10–20. [10]
than adults to the effects of pollution. Exposure to environmental pollutants during important times of physiological development can lead to long-lasting health problems, dysfunction, and disease.2 Children’s lung functioning is not yet fully developed.3–5 Compared to adults, they breathe in greater levels of polluted air relative
After a singular LSD experience, Dederich conjured up a drug-free commune for heroin addicts in Santa Monica. Dederich held that addicts lacked maturity or the ability to handle freedom responsibly. They must be broken down to be built back up. “Comfort is not for adults,” Dederich argued in a taped speech during the commune’s early days.
or the increasingly popular membrane technology that is mercury free and more energy-efficient. Worldwide there are approximately fifty mercury cell chlor-alkali plants in operation [1]. Of those there are eight in the United States (US) [2]. In 2003 the EPA reported in the Federal Register that on average approximately seven tons of mercury
1,500 miles, he spoke at length and individually with nearly 200 randomly selected refugees. Forty-three percent of them has arrived at these camps during the period of the assessment, some within hours of the interviews conducted for this study. They came from 48 different districts of Mozambique, including northern, central and southern ...
A 200-litre drum (known as a 55-gallon drum in the United States and a 44-gallon drum in the United Kingdom and the rest of the world) is a cylindrical container with a nominal capacity of 200 litres (55 US or 44 imp gal). The exact capacity varies by manufacturer, purpose, or other factors.