Water Filter Reviews

Looking for an under counter water filter?  Read this under counter water filter review before you buy.

You may suffer from a little sticker shock, if you don’t have a little advanced warning.  That’s what I’m here for. So choose carefully. Follow my advice.

Price No Guarantee of Performance

The price ranges on under counter water filters vary from less than a couple of hundred to more than $800.  And, all of these systems are designed for people with publicly treated water.  Here’s a brief look at some of the most popular systems and why they cost so much.

Kenmore Under Counter Water Filter

You may love Sears, but if you are like many people, you may hate their under counter water filters.  I read five reviews and all but one was negative.  The system comes with a “warning light” to let you know it’s time to change the filter.
 
One customer said that the light came on after two days.  Another said that there’s went out completely after two months and regardless of battery changes and attempted repairs, it never came back on.  So, now they have to “guess” when it’s time for a replacement. 

At $250, this is not the most expensive system on the market, but it isn’t the best quality, either.  The contaminant reduction is low as compared to other systems.

Ever-Pure Under Counter Water Filters

You might compare this brand of under counter water filter to a Cadillac.  If you really want to spend the extra money (around $800), then go ahead.  But, other models “drive” just as well.

Ever-pure allows you to “choose” which contaminants to remove.  The systems are bulky and difficult to install.  There most expensive model is the ROM III.  It’s the only one that removes chlorine byproducts and VOCs, but that’s not the reason for the added expense.

The ROM III includes a reverse osmosis step, which is simply an unnecessary expense for anyone with publicly treated water.  The step is sometimes recommended for cyst removal, but any system certified to filter down to one micron will also remove cysts.

GE Under Counter Water Filters

A GE under counter water filter can only be purchased and installed by a dealer.  That means you’re paying mark-up.  It’s not an unreasonable price at $200, but there are still less expensive systems that do a better job and don’t require professional installation.

 The Best Under Counter Water Filters

Multi-stage selective filtration, that’s the phrase to look for.  These units remove the widest range of contaminants, everything that is commonly found in publicly treated water and the price is reasonable.  For about $200, you can get a package that includes a showerhead system, as well. 

Didn’t think about your shower?  You should know that your risk of exposure to hazardous chemicals is even higher in the shower.

The systems remove chlorine and its byproducts, lead and copper and all of the cancer-causing chemicals that are often found in tap-water.  You can buy this under counter water filter direct from the manufacturer, install it yourself, protect your health and save money at the same time.  I that found this company has the best price, as well as, it has the best and most effective water filtration system.

About the Author:

Larry L. Taylor is a dedicated advocate of living a healthy lifestyle and diligent researcher of water purification systems. Visit his site at: http://www.CleanWaterPure.com to discover which water filtration system Larry recommends.

Article Source: ArticlesBase.com - Under Counter Water Filters - Top Brand Review

Biology/Evolution question regarding whales..?

I need help on this question for a test review in my biology class.

There are two types of modern whales: toothed and baleen whales. Baleen whales filter plankton from the water using baleen, plates made of fibrous proteins that grow from the roof of their mouths. The embryos of baleen whales have teeth in their upper jaws. As the embryos develop, the teeth are replaced with baleen.

Which of the following conclusions is best supported by this information?
A. Teeth and baleen are analogous structures
B. Toothed whales descended from baleen whales.
C. Baleen whales evolved into toothed whales.
D. Descendants of modern baleen whales will have both teeth and baleen as adults.
E. Primitive whales had teeth as adults.

If you could explain your answer, that would be great. I'm confused.

They want you to figure out which order of evolution is the most parsimonious - that is, the simplest explanation. So there are two choices:

1. Baleen whales came first. That means that toothed whales evolved from baleen whales. However, since baleen embryos have teeth, that means that: a) all the original baleen whales are gone and have become toothed whales and b) some toothed whales evolved back to having baleen.

2. Toothed whales came first. They're done evolving. Then there's a mutation, and baleen whales evolve. There's no double evolving needed in order to account for the teeth in embryos of baleen whales.

Go through the answer choices:
A. analogous = they look similar but came from different genetic lines
B. option # 1 above
C. same as B, just stated differently
D. there's nothing in the question about this. They talk about embryos, not adults. You can't tell what phenotypes species will have based on their embryonic state (generally).
E. option # 2 above

B and C are the same thing, and since there's only 1 answer, it can't be either of these.
A is just wrong.
D is thrown in there to confuse you.
E is the correct answer. It follows the law of parsimony.

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