1 | There's been no news of him since he left. | |
2 | Living in a countryside tends to insulate us from the outside world. | |
3 | All this has combined to afflict Africa with the burden of geographic isolation. | |
4 | Isolated in the Pacific, it is far from major sources of pollution. | |
5 | Having evolved effectively in isolation, more new species are being discovered there to this day. |