gaseous and sedimentary
The two biogeochemical cycles that depend directly on photosynthesis are the oxygen cycle and the carbon cycle. Photosynthesis is the driving force between these two cycles.
"Complex" and "Simple".
There are 2 most general categories. These are metals and non-metals.
democratic and authoritarian
Two general categories that science can be broken down into are biology and chemistry. Biology focuses on how animals and plants evolve while chemistry measures chemical reactions.
There are two types of insurance: life and general. There are subcategories under these two categories.
Subarachnoid hemorrhages are classified into two general categories: traumatic and spontaneous.
Subarachnoid hemorrhages are classified into two general categories: traumatic and spontaneous.
Well it can be divided into the education of science or the knowledge
Exercise and skilled movement
The encyclopedias contain subject based categories manual selection. There are two types of encyclopedia namely the general and the subject.
A duopoly is a special type of oligopoly in which the market has only two firms. There are two general categories of duopoly: Cournot and Bertrand.