index - a numerical scale used to compare variables with one another or with some reference number. 1  margin of error, margin of safety, safety margin - the margin required in order to insure safety; in engineering the margin of safety is the strength of the material minus the anticipated stress.
Nutty Ways to Celebrate Squirrel Appreciation Day This Year. SQUIRRELS! Whether you love them or loathe them, National Squirrel Appreciation Day, January 21st, is a great time to take a few moments and learn about these nutty animals. If you count flying squirrels we have 10 tree species in North America.
Bring your dog for a walk in the park to raise money for homeless pets and horses! The Dumb Friends League is hosting its 24th annual Furry Scurry dog walk on Saturday, May 6 in Denverâs Washington Park. Read More. April 10, 2017.