| Abundant element in Earth's core |
| Earth's life zone |
| About 2% of the Earth's surface |
| About a third of Earth's landmass |
| About 30% of Earth's landmass |
| Motivation for the earth's rotation? |
| Earth's air env. |
| About nine percent of Earth's surface |
| About a third of Earth's land mass |
| About a third of Earth's land area |
| About 1 percent of the Earth's atmosphere |
| About 30% of the earth's land |
| About a fifth of Earth's land area |
| About 30% of Earth's land area |
| A fifth of Earth's land: Abbr. |
| What magma is called once it reaches the Earth's surface |
| It accounts for roughly 15% of the Earth's population |
| About 1% of the Earth's atmosphere |
| Earth's apex |
| About 30 percent of Earth's land area |
| About 28% of the Earth's surface |
| About 20% of the earth's land: Abbr. |
| About 1/3 of Earth's land |
| Like earth's orbit |
| About 30 percent of the earth's surface |
| Almost 1% of the Earth's atmosphere |
| About 8 percent of earth's crust |
| The smallest of the Earth's oceans |
| Earth's reflectiveness |
| Of Earth's largest landmass |