Thus, if cyanobacteria had remained a rare life form, oxygenation of the biosphere would probably not have occurred.
It is worthwhile considering what new methods would allow us to identify and characterize an alternative life form.
Is there something sacrosanct about the human life form?
Swiftness in a deer is a capacity which is part of its life form.
Participating in the hunt conducted by its pack is part of the life form of wolves.
The achievement of the diverse elements of the human good are served by the life form of our species.
It should be noted that the shrub life form comprised typical shrub species as well as young trees.
The intelligence of any life form can be determined in this manner.
