| Description | Answer |
|---|
| The curved surface (concave or convex) of a liquid in a test tube is known as this | |
| In 1928, Alexander Fleming discovered this | |
| This energy source produces the most carbon dioxide | |
| Entomology is the study of this | |
| Blue-green algae is better known as this | |
| The average human has this many permanent teeth | |
| Under scientific classification, birds form this Class | |
| Rust is formed from the oxidation of this metal | |
| The first safe polio vaccine was developed by this man | |
| The aurora borealis is found in this layer of earth's atmosphere | |
Periodic Table 
The Nine Planets 
Digits of Pi
