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What is the state tree of West Virginia?
How do snakes detect heat to locate prey?
What is the most famous American landmark for political history?
What is the most famous U.S. landmark in the west?
What is the longest highway in the United States?
What is the purpose of the human digestive system?
What is the state bird of Virginia?
How do sea otters live?
Where is the Statue of Liberty located?
What is the state bird of Kentucky?
Why do koalas sleep so much?
How do planes stay in the air?
Why do deserts have extreme temperature differences?
What is the UK’s largest national park?
What countries does Angola border?
How do seahorses live?
How do spiders spin their webs?
Why do some animals have bright colors in their skin or fur?
What is the national sport of the UK?
Why do deciduous trees shed their leaves in autumn?
What is the largest city in the United States by population density?
How do bushmasters live?
What is the state gemstone of Tennessee?
What countries does Colombia border?
When was the Great Wall of China built?
How do fireflies produce light?
What countries does South Korea border?
What countries does Portugal border?
Why do hummingbirds hover in place?
What is the most famous Canadian city for skiing?