I'm sure the laws will come out that we (mammals) are allowed one breath per hour. After all we produce more carbon dioxide and water vapor than anything else.
Trees and grass will be the only allowed life (PETA). After all, they consume CO and produce O2.
Cows must go. Way too much methane.
The oceans produce lots of CO (probably due to the exchange of the plankton for O2) so we have to cover them with plastic (If I were a bubble wrap manufacturer I'd be very happy).
Our lowly Cobras ride way below the radar screen in the grand scheme of all the bigger fish..
By the way, snakes are cold blooded and we are snakes
