Sentence examples for early living forms from inspiring English sources

In any case, there is no doubt that the early living forms had to cope with a wide range of environmental stresses.

Plants unlike other living forms are sessile thereby facing severe biotic and abiotic stresses.

However, as illustrated in "Chapter I Life's Spork", it is very unlikely that DNA was the first "living molecule," and the earliest life forms probably utilized the much more versatile RNA (or perhaps something even simpler).

Consider cyanobacteria, an early life form.

Margulis's great insight was that, in the early history of life on earth, some 3.5bn years ago, when the only living forms were single-cell creatures without complex internal structures, evolutionary success could arise through increasing cellular complexity.

The earliest fossil albatrosses were found in Eocene to Oligocene rocks, although some of these are only tentatively assigned to the family and none appear to be particularly close to the living forms.

He begs for a living, forms an association for beggars and tries to reform them.

His framework organized life systematically by categorizing living forms according to similarities and differences.

Later, the substrate relationship became less evident, or present only in very early developmental stages, with adult specimens becoming free-living forms, such as observed within Flabellum.

They are the earliest diverging lineage of this group and are often considered to be "living fossils" since living forms seem to have changed little from their ancient ancestors.

In all organisms on Earth, many biological molecules have the same "handedness" (these molecules can have both "left-" and "right-handed" forms that are mirror images of each other; see below The earliest living systems).