The Most Accurate Way To Determine The Age Of Bears Is To?
Answer: Count Their Tooth Rings
In a curious crossover between checking the age of a tree and checking the age of a bear, the most accurate way to do both is to count their rings. Specifically, in the case of bears, the best way to determine the age of a bear is to examine a cross-section of their teeth (the outer part of the root, called cementum) under a microscope and count the layers.
Much like trees go through periods of growth and rest that create the rings of their trunk, bear teeth also go through periods of growth and rest continuously over the course of the bear’s life. Every year a new lighter colored layer forms and during the bear’s hibernation period, a thin black layer forms.
Not only can you count the black lines to see how many years the bear has been alive, but you can also examine the spacing between them to learn about the bear’s general health including if it has given birth to and raised cubs. The growth layers on mother bears’ teeth are thinner during the years they have cubs because much of the calcium and nutrients that make up tooth growth go to nursing the cubs.
Obviously this method, as you would assume, is reserved for posthumous examination as, unlike trees, no bear would stand for such an invasive examination.
The Ubiquitous Chinese Food Takeout Container Was Actually Invented To Hold?
What Led To Newton’s Development Of Infinitesimal Calculus?
1816 Is Known As “The Year Without A Summer” Because Of Events Triggered By?
Which Google Product Includes A Nod To Sci-Fi Classic The Hitchhiker’s Guide To The Galaxy?
The Original Macintosh Keyboard Was Missing What Common Modern Keyboard Feature?
Which Pizza-Sized Movie Format Failed to Win Over Consumers?
In Architecture, Structures Built For Decoration But Suggestive Of A Functional And Grander Purpose Are Called?
Across The American South-West You’ll Find Massive Concrete Arrows That Were Intended To Guide?