Read the text about Grand Canyon and fill in each blank with NO MORE THAN THREE WORDS OR/AND A NUMBER. The Grand Canyon is one of the world's natural wonders. It is in the state of Arizona in the United States. The Canyon is 446km long, up to 29km wide and up to 1.83 km deep. The Grand Canyon is an important geological site because of the different ages of the layers of the rocks. People say that the rocks at the bottom of the Canyon are about 2 billion years old. The Canyon and its surrounding area are home to over 1,500 plant species, almost 50 species of reptiles, 90 species of mammals and several hundred different bird species. Every year, about 5 million people visit the place. The Grand Canyon Location: (1) Answer 1 Question 6, USA Size: 446km long, up to 29 km wide, up to (2) Answer 2 Question 6 km deep. Status: - Important geological site. - Rocks at the bottom: (3) Answer 3 Question 6 years old. Plants and animals: -1,500 (4) Answer 4 Question 6. - Almost 50 species of reptiles, 90 species of mammals and several hundred different bird species Number of visitors a year: 5 million.