Modified Beaver
Παρακολουθήθηκε 1,489 φορές
Περιγραφή βίντεο:
To clean the rivers and the canal we use our modified beaver : it collects both organic and synthetic materials. Dispersion is pollution, concentration accelerates bio-degradation. Animals are just amazing.
Προστέθηκε
13 Ιανουάριος 2017
Σχόλια
