Biology is all around us! It's in the leaves of fall, in the way our body reacts to illness, and even in the changing nature of the animals of our world.

Why Leaves Change Color in Fall
Every fall, leaves put on a spectacular color change in the eastern United States. What causes leaves to change color in the autumn? What makes for the best colors?

http://www.bellaonline.com/articles/art18252.asp

Blood Types and Illnesses
Your blood type is important for transfusions - but knowing more about your blood can help you learn what your body might react poorly with.

http://www.bellaonline.com/articles/art14438.asp

Sockeye Salmon of Seattle and Evolution
In 1937, a batch of sockeye salmon were added to Lake Washington in Seattle. By 1992, the fish had formed into two distinct groups that looked different from each other and would not interbreed.

http://www.bellaonline.com/articles/art14356.asp

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http://forums.bellaonline.com/postlist.php?Cat=0&Board=244

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