Unit 4

The mountains found on the western side of Columbia are the _______ Andes.

• Andes

• Rocky

• Himalayas

• Alps

The _______ is a mountain system made up of roughly parallel ranges.

• Andes

• Rocky

• Himalayan

• cordillera

A plains region between the highlands and the Andes is called the _______ .

• llanos

• pampas

• savanna

• steppe

The longest river in the region that flows through Venezuela to the Atlantic Ocean is the _______ river.

• Amazon

• Nile

• Mississippi

• Orinoco

The _______ river is 4000 miles long and flows eastward across northern Brazil.

• Amazon

• Nile

• Yangtze

• Mississippi

A partially enclosed body of water that has salt water mixing with fresh water is called an _______ .

• estuary

• lagoon

• bay

• fjord

The _______ estuary connects the Parana river to the Atlantic Ocean.

• Rio de la Plata

• Amazon

• Nile

• Yangtze

A wide grassy plain located in Argentina is called a _______.

• pampas

• savanna

• steppe

• prairie

The action of clearing trees for farmland is called _______ .

• deforestation

• afforestation

• reforestation

• urbanization

Soil that has become infertile and lost its nutrients needed for plants is said to have _______ .

• soil exhaustion

• soil erosion

• soil compaction

• soil salinization