Editor's Note: This is the first in a two-part series on turtles. There are over 240 species of turtles worldwide, but turtles are most abundant in eastern North America. Most turtles have good field ...
AZ Animals on MSN
Why some animals never stop growing—and what stops them
Most animals reach an adult size, then spend the rest of their lives maintaining it. After maturity, their energy goes toward ...
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