Underwater grasses grow in the Susquehanna Flats near Havre de Grace, Md., on July 25, 2016. Low-oyxgen "dead zones" can suffocate underwater plants and animals, which rely on dissolved oxygen to survive. (Image by Will Parson)
Your comment has been received. Before it can be published, the comment will be reviewed by our team to ensure it adheres with our rules of engagement.
Comments
There are no comments.
Thank you!
Your comment has been received. Before it can be published, the comment will be reviewed by our team to ensure it adheres with our rules of engagement.
Back to recent stories