| 1 | Termite fishing with twigs and the mid-ribs of leaves were two. | |
| 2 | It was David Greybeard who Goodall later watched making that leafy tool to obtain termites. | |
| 3 | This is no human city, of course. It is a termite mound. | |
| 4 | He tried to devise a foolproof plan for getting rid of termites. | |
| 5 | To do this, termites open and close a series of heating and cooling vents throughout the day. |