Monday, March 22, 2021

humor week 71 .....

 

 

 

http://purpletreehouse.blogspot.com/2021/03/humor-week-71.html

 

 

 

 Oxygen, the secret formula for human life - Bios Urn 


Enjoy It While It Lasts: Dropping Oxygen Will Eventually Suffocate Most  Life on Earth 


Is atmospheric oxygen declining, and does it matter? - BBC Science Focus  Magazine 



Basics of Dissolved Oxygen | Kasco Marine 


Portable Oxygen Concentrator Rental & Purchase Options | Inogen 


greenwich, greenwood, greenville, greenwood,

places pop up green leaf

nice earth ..a green earth produces green shade


 

 

1 comment: