Mexicans, Asians, and douchebags
MAOIsTricyclicsSSRIs
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The 3 main groups of seedless vascular plants are: ferns, horsetails and club mosses.
Igneous, sedimentary, and metamorphic
The 3 main religious groups are: -Christianity -Judaism (Jewish) -Islamic The previous answer is not correct. The religions listed above are the Abrahamic Religions and not the main religious groups of the world. There are literally hundreds of thousands of religious groups, and possibly thousands of "main" religious groups.
1. Mammals 2. Reptiles 3. Amphibians 4. In-vertebrates 5. Insects
sedimentary
general industry, construction, and maritime are the 3 main standards of OSHA.
Mangolids(yellow race) ,Brown race and Caucasoid race.
Tlingit, Haida, and Tsimshian.
3d-block elements or tranformation elements and 4f-block elements or lanthanides and actinides
The main group is Mestizo - forming about 69% of the population. The other groups are White (17%), Black (9%) and Amerindian (5%)