Main Idea

Front

Rhinoceros skin is thick but sensitive to insect bites and sun. They roll in mud for protection.

Back

Rhinos have sensitive skin.

Front

Rhinoceros horns are made of what?

Back

A rhinoceros' horn is made of protein, not bone.

Front

5 species of rhinos: Javan, Sumatran, Indian (Asia) & black, white (Africa). Javan & Sumatran are critically endangered. Black rhino is critically endangered. White rhino's numbers rose to 20,000 after near extinction.

Back

Three of the five species of rhinoceros are in fear of becoming extinct.

Front

Rhinos have poor eyesight but compensate with strong hearing and smell.

Back

Rhinos don't see very well, but their other senses help make up for it.

Front

The Grand Canyon was carved by the Colorado River over millions of years through erosion, starting to form around 6-7 million years ago.

Back

The Grand Canyon was formed by a single river years and years ago.

Front

The Grand Canyon is long and deep, but not the longest or deepest canyon.

Back

The Grand Canyon is very long and deep, but it's not the longest or deepest canyon.

Front

Grand Canyon's national park status was delayed; it wasn't among the first parks in the U.S.

Back

The Grand Canyon was not one of the first national parks in the United States.

Front

Grand Canyon Skywalk: a glass walkway offering views 4,000 ft down. Popular since 2007, over a million visitors yearly.

Back

The Grand Canyon Skywalk is a popular attraction at the Grand Canyon.

Front

Astronauts were celebrities in the 1960s, receiving parades and high TV ratings for space missions.

Back

Astronauts were very popular with the public during the 1960's.

Front

Astronaut training involves a year of intensive learning, covering science, space station operations, and medical skills, followed by detailed mission preparation.

Back

Astronaut candidates undergo a rigorous training program.