Question

multiple choice
how can scientists tell the age of a bighorn sheep?
this question is worth 2 point(s)
by checking the color of its fur.
by counting the annu rings on its horns.
by observing its behavior.
by measuring the length of its horns.

Explanation:

Bighorn sheep horns grow in layers. Each year, a new layer (annual ring) forms. Counting these rings helps determine the sheep's age. Fur color, behavior, and horn length are not reliable age indicators.

Answer:

B. By counting the annual rings on its horns.