This river is well-known as the longest river in the world.
What is the Nile River?
This class of animals is covered in dry scales, lays eggs, and are cold blooded.
What are reptiles?
While some believe Vikings could have reached North America first, this Italian explorer is still widely considered the first to arrive.
Who is Christopher Columbus?
Water is made of these two chemicals.
What are Hydrogen and Oxygen.
Types of this common tree are Sugar, Red, Silver, and Japanese.
What are Maple trees?
Rome is the capital of this European nation.
What is Italy?
This animal is also known as the largest on planet Earth.
What is the Blue Whale?
James W. Marshall saw a valuable ore in a creek which led to this major American event.
What is the California Gold Rush?
Humans and animals exhale it, while plants inhale it.
What is Carbon Dioxide?
Types of this tree include White, Red, Black, and Bur.
What are Oak trees?
The Andes Mountains are the site of Machu Picchu and stretch across the western portion of this continent.
What is South America?
These mammals are iconic in Madagascar, their tails are also very similar to a raccoon's.
What is a lemur?
On August 28, 1963, a leap for civil rights was made when this famous event took place.
What is the March on Washington?
The air we breathe is only 21% oxygen and is 78% of this chemical that is well-known for being nutritious for plants.
What is Nitrogen?
Types of this tree include Quacking and Large-Tooth.
What are Aspen trees?
This is the world's largest continent.
What is Aisa?
This amphibian has bright colors, but a simple touch can be fatal.
This Civil War battle occurred when George B. McClellan pushed Robert E. Lee out of Union land. It became known as the single bloodiest day in American history.
What is the Battle of Antietam?
The only Noble Gas that starts with an A.
What is Argon.
Types of this tree include White, Weeping, Corkscrew, and Bebb.
What are Willow trees.
Idaho's capital.
What is Boise?
This breed of dog was created when Scottish people in search of work came to the English county, Yorkshire. They brought along with them many small terriers.
What are Yorkshire Terriers (Yorkies)?
This war was caused when Americans expanding north-west found British guns on Native American bodies.
What is the War of 1812?
Changing matter into energy or the opposite way is called this.
What is Cellular Respiration.
Types of this tree are Saharan, Monterey, Italian, and Arizona.
What are Cypress trees.