Life Classifications
This type of organism breathes carbon dioxide and uses photosynthesis.
What are plants?
All living things need this liquid to survive.
What is water?
This fundamental force of the universe is why water flows downhill.
What is gravity?
This form of sediment is left behind by ocean waves on the beach.
What is sand?
China built their Great Wall to keep out invaders from this modern-day country.
What is Mongolia?
This type of organism breathes oxygen and can move on its own, but must eat other organisms.
What are animals?
All organisms use this complex molecule as a blueprint for how to run their bodies.
What is deoxyribonucleic acid? (DNA)
Rivers start by forming into these, which later combine into gullies.
What are rills?
These rock particles measure less than two millimeters, but more than 50 micrometers.
What is sand?
Muslims are banned from eating this kind of meat, because they consider the animal it comes from to be unclean.
What is pork?
This type of “organism” can’t reproduce on its own, many argue that it’s not an organism at all.
What are viruses?
All organisms can make these, referring to their children which continue the species.
What is offspring?
A river is said to be doing this, if it forms long, sharp curves.
What is meandering?
These are the smallest rock particles, being less than two micrometers across.
What is clay?
This Crusade led to the sacking of Constantinople in 1204.
What is the Fourth Crusade?
This most specific category refers to organisms that can have fertile offspring with each other.
What is species?
Life on Earth is said to be based on this element, which makes up half of dry organic matter.
What is carbon?
If the river’s curves become too sharp, they can pinch themselves off, leaving behind this kind of lake.
What is an Oxbow Lake?
This kind of dirt forms when rock particles mix with organic matter.
What is soil?
This meeting, dominated by four great powers of Europe, tried to maintain peace and a balance of power in the continent after Napoleon’s defeat.
What is the Congress of Vienna?
Organisms are said to be eukaryotes, one of the three main domains of life (which includes animals, plants, and fungi), if they have this organelle in their cells.
What is a nucleus?
This destructive chemical reaction can be called a living thing, if the only requirements are that an organism can grow, eat, and reproduce.
What is fire?
This river contains 20% of all the river water in the world.
What is the Amazon River?
Rivers form this feature at the bottom of mountains, when gentler slopes force them to drop off their sediment all at once.
What is an alluvial fan?
This Native American civilization did not use money, writing, or wheels.
What were the Inca?