1.   All but the dirtiest of rivers support some plant life.

2.   It is easy to maintain and does not need either aquatic plant life, fish or snails.

3.   It is ideal for sighting rare arctic-alpine species of plant life.

4.   Like the oceans in general, healthy reefs seem remarkably free of plant life.

5.   Many species of plant life continue to be eradicated in South American rain forests.

6.   Pollution is rapidly killing off plant life.

7.   She does not simply restore plant life, but teaches the secrets of agriculture, giving humans control over their food supply.

8.   The book is full of interesting facts about plant life.