• Orca vs great white shark
Who is the real apex predator?
8767

• Occam's Razor
4386

• Odd Number
The Odd Number Rule
10066

• offensive ▷▷▷
11561

• opal
7181

• optical fiber
7050

• optical fiber cable
6554

• oral ▷▷▷
Myths are an interesting and important part of _____ history and in lesson 2 you will learn about the main gods and goddesses of Greek mythology.
10444

• ordeal
ordeal, hull, drifting, resourceful, onslaught
4344

• Orion ▷▷▷
If you can find _____ , you can find every other constallation that surrounds it within the winter sky.
11747

• Osman Cavala
Damascus, Aleppo, envoy
6277

• overhyped inventions
7056