The lat and long way
This river, the longest in the world, flows through northeastern Africa.
What is the Nile?
This carbonate mineral reacts vigorously with hydrochloric acid and is the main component of limestone.
What is calcite?
This sedimentary rock is formed mainly from compacted plant material.
What is coal?
This state is home to the Grand Canyon.
What is Arizona?
This process converts organic waste into nutrient-rich soil through decomposition.
What is composting?
This country has the largest population in the world as of this mid-2020s.
What is India?
What is Talc?
This igneous rock is known for its coarse grains and is commonly used in countertops.
What is granite?
This Great Lake is the largest by surface area.
What is Lake Superior?
This gas, produced by burning fossil fuels, is a major contributor to climate change.
What is carbon dioxide?
This mountain range forms the natural border between France and Spain.
What are the Pyrenees?
This mineral exhibits perfect cubic cleavage and is commonly known as "fool's gold."
What is pyrite?
This fine-grained igneous rock forms from rapidly cooled lava and is the extrusive equivalent of granite.
What is rhyolite?
This state has the most national parks.
What is California?
This renewable energy source uses the Earth's internal heat and is especially prominent in Iceland.
What is geothermal energy?
This desert spans much of northern China and southern Mongolia and is known for its sand dunes and harsh climate.
What is the Gobi Desert?
This gemstone variety of corundum is typically red due to trace amounts of chromium.
What is ruby?
This mafic intrusive igneous rock is the coarse-grained equivalent of basalt.
What is gabbro?
This state borders the most other states.
What is Tennessee?
This international agreement aims to limit global warming to well below 2 degrees Celsius.
What is the Paris Agreement?
These two countries are the only landlocked countries in South America.
What are Bolivia and Paraguay?
This mineral, Al₂SiO₅, has three polymorphs that are index minerals for metamorphic facies.
What are aluminosilicates (Kyanite, Sillimanite, and Andalusite)?
This metamorphic rock forms from basalt under high-pressure, low-temperature conditions, often in subduction zones.
What is blueschist?
This U.S state is home to the cities of Fargo and Bismarck.
What is North Dakota?
This international protocol, adopted in 1997, set binding emission reduction targets for developed countries.
What is the Kyoto Protocol?