| 1 | One answer is kin selection. | |
| 2 | Much has been made of the long historical affinity between the two. | |
| 3 | "It is easy to see how closely we are related to these great apes, " said Nancy. | |
| 4 | These networks of kinship and language make it easier to do business across borders (see article). | |
| 5 | The Japanese encephalitis (JE) virus is spread by mosquitoes and is closely related to the West Nile virus. |