[Answer] What explorer first visited the U.S. river, which is the largest within its state, creating a natural boundary with Mexico?

Step 1 : Introduction to the question "What explorer first visited the U.S. river, which is the largest within its state, creating a natural boundary with Mexico?"

...Hint :Norte

[Answer] Where are these natural limestone pillars?

Step 1 : Introduction to the question "Where are these natural limestone pillars?"

...1. Cuba 2. Australia 3. United States 4. South Africa

[Answer] Where are these natural limestone pillars?

Step 1 : Introduction to the question "Where are these natural limestone pillars?"

...1. Cuba 2. Australia 3. United States 4. South Africa

[Answer] This national park was our nation's first and features 2.2 million acres of mountain scenery, animals and endless natural beauty.

Step 1 : Introduction to the question " This national park was our nation's first and features 2.2 million acres of mountain scenery, animals and endless natural beauty. "

...1. Yosemite National Park 2. Yellowstone National Park 3. Grand Teton National Park 4. The Great Smoky Mountains National Park

[Answer] 10. This flightless bird had no natural predators as it lived in a remote place. When Europeans came they brought rats, pigs and monkeys which ate its eggs and by 1680 they were extinct.

Step 1 : Introduction to the question "10. This flightless bird had no natural predators as it lived in a remote place. When Europeans came they brought rats, pigs and monkeys which ate its eggs and by 1680 they were extinct. "

...1. Dodo 2. Moa 3. Elephant Bird 4. Great Auk The huge-beaked, turkey-sized dodo lived on the island of Mauritius.

[Answer] 10. This is mainly eaten in the form of common salt. Most natural foods contain little amounts, but considerable amounts are added when preserving and processing foods. It is lost from the body through sweat. Too much loss can cause muscular cramps.

Step 1 : Introduction to the question "10. This is mainly eaten in the form of common salt. Most natural foods contain little amounts, but considerable amounts are added when preserving and processing foods. It is lost from the body through sweat. Too much loss can cause muscular cramps."

...1. Folic Acid 2. Sodium 3. Phosphorus 4. Fluorine High salt intakes are associated with high blood pressure, which is a cause of heart disease and strokes.

[Answer] What is the only natural landmark to have a constellation named after it?

Step 1 : Introduction to the question "What is the only natural landmark to have a constellation named after it?"

...1. Table Mountain 2. Kukenan 3. The Atlantic Ocean 4. Mount Conner

[Answer] A bumper sticker advertising this city in New York reads "______ is gorges" as a play on both the abundance of the natural feature and the area's beauty.

Step 1 : Introduction to the question " A bumper sticker advertising this city in New York reads "______ is gorges" as a play on both the abundance of the natural feature and the area's beauty. "

...1. Ithaca 2. Buffalo 3. Amityville 4. Georgetown

[Answer] Where is the world's largest natural harbor?

Step 1 : Introduction to the question "Where is the world's largest natural harbor?"

...The world's largest natural harbor is Sydney Harbour in Sydney, Australia. The city makes good use of this natural resource, locating many of the city's renowned attractions there. These include the iconic Sydney Opera House, the Sydney Harbour Bridge and the Sydney Aquarium. The harbor covers 21 square miles and is over 11 miles long. It is home to over 580 species of fish and includes many historically significant islands. Source: Reference.com

[Ans] The buildings that make up the Taos Pueblo are made of what natural material?

Step 1 : Introduction to the question "The buildings that make up the Taos Pueblo are made of what natural material?"

Beats Electronics LLC (also known as Beats by Dre) is a division of Apple Inc. that produces audio products. The company was founded by music producer and rapper Dr. Dre and Interscope Records co-founder Jimmy Iovine. In 2011, the Beats' market share was 64% in the U.S. for headphones priced higher than $100. On August 1, 2014, Apple Inc. acquired Beats for $3 billion in a cash and stock deal, the largest acquisition in Apple's history. The deal made Dr. Dre the "richest man in hip hop", surpassing P. Diddy.

[Ans] This Hawaiian island is home to a natural swimming hole called Chutes and Ladders. Kauai Maui Oahu Lanai

Step 1 : Introduction to the question "This Hawaiian island is home to a natural swimming hole called Chutes and Ladders"

......The Hawaiian monarchy was overthrown by wealthy U.S. and European settlers in 1893. The usurpers then established a republic, and despite opposition from the majority of the Hawaiian people, successfully negotiated with the United States for annexation in 1898. The U.S. state of Hawaii now occupies the archipelago almost in its entirety (including the uninhabited Northwestern Hawaiian Islands), with the sole exception of Midway Island, which instead separately belongs to the United States as one of its unincorporated territories within the United States Minor Outlying Islands.

[Ans] Which natural wonder is featured on the commemorative Oregon State Quarter?

Step 1 : Introduction to the question "Which natural wonder is featured on the commemorative Oregon State Quarter?"

“Crater Lake is a great choice for the Oregon quarter,” said Associate Director Eskridge. ... Because of this quarter, many more will discover Oregon's natural wonders.” Following the launch ceremony, which featured three of Oregon's Native ... Lesson plans about the Oregon Quarter, the 50 State Quarters Program, and the ..., Inspired by Travel Oregon's "The Seven Wonders of Oregon" travel oregon ... Oregon Commemorative Quarter · by Lee Juillerat · In 2005, Crater Lake was featured on the Oregon State Quarter, part of the U.S. ... natural environment, and culture that have helped shape northwest Oregon and the entire Pacific Northwest., CRATER LAKE BLANKET. Subscribe to the Travel Oregon email newsletter and be entered to win a commemorative Crater Lake Pendleton ..., In 2013, the Oregon Department of Transportation (ODOT), in partnership with the U.S. ... the new plan offers real promise that federal, state and local officials are now more ... Widening the Loop Highway is even worse for the natural environment, ...... that featured an Oregon Trail theme, native salmon and Crater Lake):., ... State Quarters ®" (1999 - 2008) circulating commemorative quarter series ... 2005 Oregon ... This state's quarter shows Crater Lake with Wizard Island in the middle. ... One of the seven natural won...