What does the Greek root “bio-” mean?

Sedimentary, Igneous, and Metamorphic rocks belong to which of Earth’s four spheres?

Fill in the blank: _________ is the layer between the geosphere and atmosphere where life is supported or grows.

What percentage of the Earth's surface is covered in salt water?

Fill in the blank: The ________ is the continuous movement of water on, below, or above the Earth's surface.

Earth’s four systems work together to make two complex systems, what are they?

What are the three of the five layers of the atmosphere?