On May 11, 1910, the U.S. Congress passed an act that established Glacier National Park, Montana, as the tenth national park in the country. National parks are created to preserve unique cultural or natural sites for the enjoyment of everyone.
 
Glacier National Park is home to the Crown of the Continent Research Learning Center. The center studies the effects of climate change on glaciers in the park. Research has shown that the park’s glaciers have been shrinking, or retreating. In 1850, there were 150 glaciers in the area, and today there are only 25. Scientists predict that by 2030, Glacier National Park may lose all of its glaciers. 
Noun

gradual changes in all the interconnected weather elements on our planet.

Congress
Noun

legislative branch of the government, responsible for making laws. The U.S. Congress has two bodies, the House of Representatives and the Senate.

glacial retreat
Noun

process by which glaciers melt faster than precipitation can replace the ice.

national park
Noun

geographic area protected by the national government of a country.

predict
Verb

to know the outcome of a situation in advance.

preserve
Verb

to maintain and keep safe from damage.

research
Noun

scientific observations and investigation into a subject, usually following the scientific method: observation, hypothesis, prediction, experimentation, analysis, and conclusion.

unique
Adjective

one of a kind.