'); } var S; S=topJS(); SLoad(S); //-->
![]() edHelper.com |
The Oxygen - Carbon Dioxide Cycle |
| edHelper's suggested reading level: | grades 3 to 5 | |
| Flesch-Kincaid grade level: | 3.97 |
| Print The Oxygen - Carbon Dioxide Cycle (font options, pick words for additional puzzles, and more) |
| Quickly Print: PDF (2 columns per page) |
|
| Quickly Print: PDF (full page) |
| Quickly Print: HTML |
| Print a proofreading activity |
| Leave your feedback on The Oxygen - Carbon Dioxide Cycle (use this link if you found an error in the story) |
|
The Oxygen - Carbon Dioxide Cycle
By Cindy Grigg |
|
1 Most living things on Earth must have oxygen to live. Oxygen is part of the air we breathe. About one fifth of our air is oxygen. Where does oxygen come from?![]() |
Create Weekly Reading Books
Prepare for an entire week at once! |