Hall Biology

Hall Biology

Biology at Seton Hall

can anybody tell me wer i can find a website dat tells da ANSWER for da chapter test in BIOLOGY PRENTICE HALL?

wer can i find sum website dat will tell me ol da answers in da every chapter of da test of da book BIOLOGY by PRENTICE HALL??

i think there should be a website listed in your book somewhere near the front. go to the chapter on the site for the chapter you are looking for. there will be a link to a quiz or test. make all the answers on the quiz or test the same answer and it will score imediately and then you can see the correct answers.

U.s. Geological Survey Evaluates Drugs in Drinking Water

 

You might have heard the shocking news about drugs in drinking water.

 

More and more respected agencies are doing quality research about this issue.

 

For example, an agency titled the U.S. Geological Survey (USGS) provides scientific research and data to help citizens understand the Earth and their water supplies.

 

In fact, it’s the nation's largest water, earth, and biological science and civilian mapping agency.

 

 

The U.S. Geological Survey (USGS) gathers and analyzes information to offer a better scientific understanding about the condition of natural resources and problems like drugs found in drinking water.

 

 

Unlike other local water authorities or reporting organizations, the USGS is a highly diverse group of professionals with vast scientific backgrounds.

 

This makes them able to perform significant, multi-disciplinary investigations and provide objective scientific information to community leaders and other individuals.

 

 

A recent study by the USGS uncovered pharmaceuticals, hormones and other waste-related chemicals in streams within the United States.

 

And while the findings are significant in their own right, the work points to the need for more research in the future.

 

 

Limited information is available on the potential health effects to human and aquatic ecosystems from low-level, long-term exposure or exposure to these chemicals and drugs.

 

However, the data about tainted water can greatly contribute to future research about the issue of drugs in drinking water.

 

 

According to Dr. Robert Hirsch, of the USGS, not much is known about how the chemicals we use everyday can affect the environment.

 

“This study begins a process of exploring the occurrence of these chemicals in our nation’s streams.

 

The new techniques for measuring these chemicals will be very helpful for the many scientists who study contaminant movement, impacts on ecosystems, and human health effects,” said Hirsch.

 

 

A report published in the journal “Environmental Science & Technology,” shows that pharmaceuticals and other chemicals have been found in small concentrations in streams across the Nation.

 

Many of the chemicals examined did not meet drinking-water standards and when they were found in public water, did have health warnings.

 

 

In addition, the USGS study found some disturbing information.

 

Researchers revealed that chemicals used in homes, agriculture, and industry can seep into the environment through many wastewater sources.

 

What they also found were drugs from animals and humans (like antibiotics), natural and synthetic hormones, detergents, fire retardants and insecticides.

 

The most chemicals and drugs found in drinking water sources included fecal steroids, plant and animal steroids and insect repellants.

 

 

All in all, since the study was the first of its kind to evaluate the occurrence of these chemicals in the United States, the focus sites were selected based on where the chemicals were most likely to occur.

 

Therefore, this study sets the tone for future studies that will answer a more wide-ranging area of topics.

 

The two biggest and most important topics being: how do the concentrations of drugs in drinking water vary with environmental conditions and what treatment methods will be the most effective to protect citizens.

 

 

About the Author

Gordon Hall is fervent about enabling you and everyone to live a healthy lifestyle, and is an ardent reviewer of Water Purification Systems. Visit his website now at : http://www.water-safe-and-pure.com to discover which Water Purification Systems Gordon recommends after far ranging and extensive comparisons.

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