We have become used to deal with biological organization in the frame of a fundamental distinction between two types of organisms: the prokaryotes and the eukaryotes.
The radiation environment of Earth has provoked evolutionary responses in many types of organisms.
Syntrophism, mutual dependence of different types of organisms for the satisfaction of their respective nutritional needs.
So when there are few types of organisms left after an extinction, there are few opportunities for new species to evolve.
Taxonomy is a scientific discipline that identifies, describes, and names individual types of organisms and classifies them into groups based upon shared characters.
And, given that creatures only ever give birth to creatures of the same species, where do new types of organisms come from?
Variations in characteristics of the marine environment create different habitats and influence what types of organisms will inhabit them.
Commensalism, a beneficial relationship between two types of organisms, is common among certain scale worms (Phyllodocida, an order of polychaetes).
A distinct modernization of life-forms occurred, partly because of the demise of many earlier types of organisms.
Bart Gallagher, a principal with Ronkonkoma-based Enviroscience Consultants Inc., which tests buildings for indoor air quality, said they checked the numbers and types of organisms found, some of which produce toxins.
Agassiz maintained that since organisms arose by a series of independent and special creations, there could be no hereditary continuity between different types of organisms.
