Geography: Brown bears are the most widely distributed bears in the world. They are found in North America, Europe, and Asia. Two subspecies of brown bear are native to North America: the grizzly bear (U. a. horribilis) and the Kodiak bear (U. a. middendorffi).
Tubal ligation. 1  There is a slight risk of becoming pregnant after tubal ligation. This happens to about 5 out of 1,000 women after 1 year. 2  Pregnancy may occur if: The tubes grow back together or a new passage forms (recanalization) that allows an egg to be fertilized by sperm.
When the fallopian tubes are blocked after a tubal ligation, sperm can't get to an egg and cause pregnancy. Tubal ligation is sometimes known as sterilization, female sterilization or âgetting your tubes tied.â There are a few different types of sterilization procedures. You still get your period after tubal ligation â you just canât get pregnant.