technically there can be over 100 groups of farmers their allover the world and china is one of the most farming countries ever so that's my answer :]
There are two types of farming (as you said). The two types are organic and in-organic.
Muslims were divided into two groups
To divide something that has already been divided. 8, which can be divided into two groups of four, can be subdivided into four groups of two.
15.5
they were not really divided into two groups but if you want two gruops how about male and female.
Simple And Complex
No.
Yes
Protozoa and Algae
Aristotle divided animals into two groups: those with red blood (vertebrates) and those without red blood (invertebrates).
living and nonliving
The two main groups of Islam are the Shia and Sunni. They divided into these groups after Mohamed died and they could not decide on just one successor.