1.
Western Australia
Part of the Western Desert
ninth largest in the world.

2.
China's second-longest
the most important to the northern half of the country.
Bohai Gulf
the Grand Canal

3. Washington state
stratovolcano that is highest peak in Washington
three principal peaks
largest glacier by area in the contiguous U.S.
largest by volume

4. a major river of the northwestern United States
forms much of the border between Idaho and Oregon (Hells Canyon)
a vital route for travelers along Oregon Trail

5.
Pakistan and China
Karakoram (the mountain range)
House's Chimney and the Black Pyramid
second-highest fatality rate among attempted climbers

6.
chief river of Pakistan and the source of the name of India.
Jhelum, Chenab, Ravi, Beas, and Sutlej tributaries

7.
longest in North America
'the father of waters'
forms the world's third-largest drainage basin

8.
Philippines (Luzon)
stratovolcano in the Zambales Mountains
huge eruption
Lake Pinatubo in the resulting crater

9.
Africa's third-longest
center of medieval Mali and Songhai Empires
mapped by Mungo Park

10.
longest river of Canada
flows out of Great Slave Lake
empties into Beaufort Sea
named for Scottish explorer

11. Cascades of Washington state
stratovolcano
May 1980 eruption (most devastating eruption)
surrounded by Gifford Pinchot National Forest.

12.
principal river of the Iberian Peninsula. hydroelectric dams produce huge artificial lakes (Sea of Castile)

13.
it terminates in a massive inland swamp (____ Delta)
mostly inhospitable

14.
vital waterway of the Pacific Northwest
Grand Coulee Dam
forms much of the Washington-Oregon border

15.
flows 1,560 miles to the world's largest delta, on the Bay of Bengal
high population density that is rapidly polluting the river

16.
a major river of the southern Great Plains
forms most of the border between OK and TX
Adams-Onís Treaty

17.
Arabian Peninsula
'Empty Quarter'
considered the most inhospitable place on earth
largest oil field - Ghawar

18.
mostly California, and Arizona, Utah Nevada
between the Great Basin and the Sonoran Desert Death Valley

19.
the western border of Mesopotamia
the longer of the two rivers

20.
Hawaii
Big Island
most active of the five volcanoes
'spewing' or 'spreading'
home to fire goddess Pele
Kaʻu Desert

21.
second-longest river in France
France's chief transport waterway

22. south-central Italy
stratovolcano on the Gulf of Naples
only active volcano on mainland Europe
POMPEII

23. Hawaii
a shield volcano on the Big Island of Hawaii that is the most massive above-sea volcano on Earth. It should not be confused with Mauna Kea, a dormant volcano that is the tallest mountain in Hawaii. Both Mauna Kea and Mauna Loa are taller than Mount Everest when measuring from base-to-summit rather than from sea level. Along with Kilauea, Mauna Loa forms the Hawaiʻi Volcanoes National Park, which was established in 1916 by Woodrow Wilson. When Mauna Loa erupted in 1942, four months after the attack on Pearl Harbor, the U.S. government gagged the press from reporting on the eruption.

24.
Africa's third-largest lake by area
southernmost of the Great Rift Valley lakes Ruhuhu River & Shire River
cichlids

25.
Italy's longest river
floods
argini (man-made levees)
pollution