Animals?
Natural Science
The Body
Space!
100

This shark has seven gill slits as opposed to the normal five. 

The Sevengill shark

100

The Richter Scale measures this. 

Earthquake magnitude

100

In medical terminology, the "voice box" is known as this.  

Larynx

100

This planet is named for the Roman God of War. 

Mars

200

A group of locusts is called this. 

Plague

200

The study of fossils is called this. 

Paleontology

200

This protein makes blood red in color. 

Hemoglobin

200

The atmosphere of Pluto is largely made up of methane, carbon monoxide, and this other type of gas. 

Nitrogen

300

This animal can clean its ears with its tongue. 

Giraffe

300

This term refers to the variability of life on Earth. 

Biodiversity
300

When this organ doesn't work properly, it typically results in diabetes. 

Pancreas

300

This is the name of the first dog in space. 

Laika