Discuss why obesity is a growing epidemic.

1 answer:

4 0

Americans don't get much exercise, but in fact, they need to exercise at least an hour a day to stay healthy, according to guidelines issued in September 2002 by the National Institute of Medicine. Members of a 21-person panel that issued the guidelines said they were concerned about the jump in obesity rates over the last few decades. According to the American Heart Association (AHA), all healthy adults should be getting at least 30 minutes of moderate intensity exercise five days a week. Modern conveniences keep people from the activities they need to stay in shape.

Many people like to blame fast food, but Bill Gates is probably as much to blame as Ronald McDonald. In fact, just about every aspect of our society actively contributes to the epidemic. A bunch of little things have dramatically tipped the scales. And in the case of the American waistline, little things can add up to something very large. Obesity has been directly linked to heart disease, high blood pressure, stroke, and type 2 diabetes and may set the stage for a host of other illnesses. In fact, American Cancer Society researchers estimate that obesity accounts for about one-third of all cancer deaths in this country.

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The moth species Biston betularia has two color morphs, or variants. One has a speckled white and black color, while the other i

Oksana_A [137]

Answer:

D. Changes in the environment changed each morph's ability to evade predation in different ways.

Explanation:

The moth species<em> Biston betularia</em> has two color morphs, or variants. One has a speckled white and black color, while the other is all black. Over the period of time, the distribution of moths dramatically changed between 1900 and 1950 in such a way that black morph became dominant but speckled morphs became very much declined in abundance. The reasons behind this change was heavy industrial pollution in UK between 1900 and 1950.

When the environment became very polluted, dark and blackish, the speckled moth had more chanced of getting eaten by predators thats why they declined in number as compared to black morphs. On the other hand, backgrounds of grime and soot made black morphs less visible to the predators and they survived well. This is an excellent example of natural selection that only those specie better survive that have the ability to cope better with adverse environmental fluctuations.

Therefore, option D is best option.

Hope it help!

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3 years ago

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azamat

I believe the correct answer is A.

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4 years ago

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The fear of girls / women is what phobia ?

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