Causes of Pyometra. Pyometra is an infection that is caused by Escherichia coli, which is a bacterium that is normally present in healthy amounts in the uterus of the dog. When there is an overgrowth of the Escherichia coli bacteria, the uterus infection occurs; this may be 2 months after the estrus.
Central America is not its own continent, but is considered part of North America geographically. Costa Rica, while being in Central America, is technically part of North America. The North American continent ends at either the Panama/Colombia border or the Panama Canal, depending on the convention you accept.
Costa Rica, located on the Central American isthmus, borders Nicaragua, Panama, the Pacific Ocean, and the Caribbean Sea. Widely recognized for its varied wildlife, Costa Rica has beautiful landscapes filled with forests, mountains, volcanoes, beaches, and rivers.1  Population: 4,805,300. 2  Life Expectancy: 80 years.acts about Costa Rica. Costa Ricaâs poverty rate of 20-25 percent has remained the same for nearly 20 years. The country also has an unemployment rate of 7.9 percent.