Which of the following reserves, monuments, or parks are attributed to the efforts of president roosevelt?
a) hoover dam
b) grand canyon
c) niagara falls
d) devil's tower
e) pelican island

The correct answers are B) Grand Canyon and E) Pelican Island.

The following reserves. monuments or parks were attributed to the efforts of President Roosevelt.

President Theodore Roosevelt really was interested in protecting the environment and the conservations of parks and natural areas in the United States. He truly was a conservationist.

On January 11, 1911, Roosevelt declared the Grand Canyon as a national monument. This beatiful place located in Arizona offers one of the most amazing views in a natural location. It is impressive.

On March 14, 1903, signed an Executive Order to make Pelican Island a wildlife sanctuary and a refuge for wildlife.  

other sources of text

explanation:

this can be magazines, news reports, scholarly articles, textbooks, research papers etc.