De-extinction
Help
The time before any written history.
Pre-historic
A community of interacting organisms and their environment.
Ecosystem
Any ground that remains completely frozen—32°F (0°C) or colder—for at least two years straight.
Permafrost
Unlock this slideshow and over 2 million more with Baamboozle+
Try slideshows
Your experience on this site will be improved by allowing cookies.
Allow cookies