Вставить пропущенные слова

Хорошо, давай вместе заполним эти пробелы. Посмотрим, что у нас получается:

1. Humans have much in common with other life forms on Earth.
2. Since the very first life forms appeared, all living things have been desperately struggling to survive the harsh and changing conditions of our planet.
3. This has led to adapting to new situations and, in many cases, has resulted in either evolution or extinction.
4. We are unique alone in making use of the world around us (birds use twigs to build nests, for example) or in being particularly skillful (spiders make intricate webs).
5. Where we really differ from other life forms, however, is in our ability to record, and learn from, our collective history.
6. In this, it is obvious that we are unique.
7. There is still much mankind does not know about the earliest humans, of course, but we are increasingly gaining a species with detailed knowledge about our past.
8. The more we learn, the better we understand our chances of survival in the future.
9. It must also be recognised, however, that we are also the only species on Earth which has managed to create the means to destroy the planet we live on.

Вот такие слова мне кажутся подходящими для заполнения пропусков. Надеюсь, что это поможет!