biology

Biodiversity - Week 10

These pages are being generated as part of a senior seminar course directed by Neal Williams at Bryn Mawr College during fall semester, 2007. This week's topic is "Biodiversity and multiple trophic levels"

LuisanaT's picture

Old men and even older women

With progressive advancements in healthcare and proper nutrition throughout the world, the human race has transgressed the bounds of average life expectancies. If one were to look at our species at today, it would be observed that women have now come to considerably outlive men.(6) When women reach midlife, usually ranging anywhere as early as 45 to 55 years of age, they begin to experience menopause. It is defined as the time when a woman’s ovaries fail to produce viable eggs and consequently cease to generate estrogens, progestin, and testosterone. These hormones were once readily used in monthly reproductive cycles and its

Samar Aryani's picture

Chocolate can be Good for You?

Chocolate.  A food known and loved by all.  Could it be true that our parent’s are wrong and that chocolate really is good for you? After researching this question I believe the answer is yes; chocolate can be beneficial to a person’s

Sharhea's picture

TB Infection

kgould's picture

Fibromyalgia, "It's like getting run over by a Mack truck."

You feel achy and sore, like every muscle in your body has been overworked or pulled. You can't focus; you've been having trouble sleeping and you wake up several times a night. It hurts to sit up in class, it hurts to move, and it hurts whenever someone touches your back or your shoulders. You've been experiencing mood swings and depression and, on top of all that, your stomach hurts. So what's the deal? It might be fibromyalgia.

 

ekim's picture

Birth Order--Evolution at its Best?

Nearly 170 years ago, Darwin introduced the story of evolution. Darwinian evolution explains the small differences within the same type of individuals and how this variation creates competition for the best to survive and pass on the best genes (1). Now, 170 years later, Darwinian evolution still prevails, even in the household of every family.

It is no surprise to see siblings in argument, especially because of clashing personalities. But why is the fighting so common? Is it only due to differences in personalities? Or could this fight actually be Darwinian evolution in the works? Could this fight be a form of competition to seek superiority?

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