TPO 1, Test 1
Timberline Vegetation on Mountains
TPO 1, Test 2
The Origins of Theater
TPO 1, Test 3
Groundwater
TPO 2, Test 1
Desert Formation
TPO 2, Test 2
The Origins of Cetaceans
TPO 2, Test 3
Early Cinema
TPO 3, Test 1
Architecture
TPO 3, Test 2
Depletion of the Ogallala Aquifer
TPO 3, Test 3
The Long-Term Stability of Ecosystems
TPO 4, Test 1
Deer Populations of the Puget Sound
TPO 4, Test 2
Cave Art in Europe
TPO 4, Test 3
Petroleum Resources
TPO 5, Test 1
Minerals and Plants
TPO 5, Test 2
The Origin of the Pacific Island
People
TPO 5, Test 3
The Cambrian Explosion
TPO 6, Test 1
Powering the Industrial Revolution
TPO 6, Test 2
William Smith
TPO 6, Test 3
Infantile Amnesia
TPO 7, Test 1
The Geologic History of the Mediterranean
TPO 7, Test 2
Ancient Rome and Greece
TPO 7, Test 3
Agriculture, Iron, and the Bantu
Peoples
TPO 8, Test 1
The Rise of Teotihuacan
TPO 8, Test 2
Extinction of the Dinosaurs
TPO 8, Test 3
Running Water on Mars
TPO 9, Test 1
Colonizing the Americas via the
Northwest Coast
TPO 9, Test 2
Reflection in Teaching
TPO 9, Test 3
The Arrival of Plant Life in Hawaii
TPO 10, Test 1
Chinese Pottery
TPO 10, Test 2
Variations in the Climate
TPO 10, Test 3
Seventeenth-Century European
Economic Growth
TPO 11, Test 1
Ancient Egyptian Sculpture
TPO 11, Test 2
Orientation and Navigation
TPO 11, Test 3
Begging by Nestlings
TPO 12, Test 1
Which Hand Did They Use?
TPO 12, Test 2
Transition to Sound in Film
TPO 12, Test 3
Water in the Desert
TPO 13, Test 1
Types of Social Groups
TPO 13, Test 2
Biological Clocks
TPO 13, Test 3
Methods of Studying Infant Perception
TPO 14, Test 1
Children and Advertising
TPO 14, Test 2
Maya Water Problems
TPO 14, Test 3
Pastoralism in Ancient Inner Eurasia
TPO 15, Test 1
Glacier Formation
TPO 15, Test 2
A Warm-Blooded Turtle
TPO 15, Test 3
Mass Extinctions
TPO 16, Test 1
Trade and the Ancient Middle East
TPO 16, Test 2
Development of the Periodic Table
TPO 16, Test 3
Planets in Our Solar System
TPO 17, Test 1 ·
Europe's Early Sea Trade with Asia
TPO 17, Test 2
Animal Signals in the Rain Forest
TPO 17, Test 3
Symbiotic Relationships
TPO 18, Test 1
Industrialization in the Netherlands
and Scandinavia
TPO 18, Test 2
The Mystery of Yawning
TPO 18, Test 3
Lightning
TPO 19, Test 1
The Roman Army's Impact on
Britain
TPO 19, Test 2
Succession, Climax, and Ecosystems
TPO 19, Test 3
Discovering the Ice Ages
TPO 20, Test 1
Westward Migration
TPO 20, Test 2
Early Settlements in Southwest Asia
TPO 20, Test 3
Fossil Preservation
TPO 21, Test 1
Geothermal Energy
TPO 21, Test 2
The Origins of Agriculture
TPO 21, Test 3
Autobiographical Memory
TPO 22, Test 1
Spartina
TPO 22, Test 2
The Birth of Photography
TPO 22, Test 3
The Allende Meteorite
TPO 23, Test 1
Urban Climates
TPO 23, Test 2
Seventeenth-Century Dutch Agriculture
TPO 23, Test 3
Rock Art of the Australia Aborigines
TPO 24, Test 1
Lake Water
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