Question Info

This question is public and is used in 189 tests or worksheets.

Type: Multiple-Choice
Category: Earth's Layers
Level: Grade 7
Score: 3
Tags: oxygen cycle
Author: Occulus
Last Modified: 6 years ago

View all questions by Occulus.

Earth's Layers Question

View this question.

Add this question to a group or test by clicking the appropriate button below.

Grade 7 Earth's Layers

Where is most of Earth's oxygen found?
  1. crust
  2. atmosphere
  3. water
  4. plants