Hunter/Gatherers
Because they did something really bad Because somebody is trying to hurt their good name Because some people are gossipers and some people are stupid enough to belive them. Because they dont know how to behave. Because they are just in the wrong group of people. Because some people make up rumors that are not true and spread them around Because they're perfectly good people but do not follow social trends or fit into popular groups.
A stereotype is giving a name and identity to a group of people (for instance, Chavs, Gangsters, Hoodies). Mostly, these are false. A prototype is a pre-release model of something. For instance, a car may have several prototypes made before it's release, each prototype contributing to the final product.
Tourette's Disease
klu klux klan or something... :/
Anthropophobia the fear of meeting new people =)
a herd is just another name for a group of animals, a more scientific name. other types are flocks, crashes, etc.
Yes "arboreal" animals.
Well, not 100% certain, but if you're talking about the group name of animals (which has to follow the rule that the collective noun describes what the animals do), you could argue the point for 'a wriggling of maggots', 'a chewing of maggots' etc.
A group of crows are called a murder ...
a name for a group of five people is a quintet
arachnids
There is no collective name for a group of platypuses. Platypuses are solitary animals and do not live or move in groups.
biosphere, ecosystem,
blue bird,hawk
Exoskeletons
the classification for chickens is poultry.
There isn't an exact name, but most of it is Marine Biologists. Also, there would be PETA(People for the ethnical treatment of animals), but they are a group that saves ALL animals.