The unique sign systems that families with Deaf children use before the children learn a standardized signed language at school are called ___________
Fill in the blank(s) with correct word
homesign systems
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In most nonindustrialized societies, the basic unit of production is the _____
a. individual b. household c. village d. government e. private company
An ethnobiologist studies __________
a. the mechanics of gene flow b. the effect of culture on genotypes c. the variations that occur between twins reared in different environments d. how cultures classify organisms in the natural world
What makes it possible for humans to accumulate an amazing amount of information over long periods of time?
a. social learning b. television c. social media d. Mimicry
The site where Toumai was found was __________
a. a heavily forested tropical area b. an open semi-arid area c. an area of rolling grassland d. a dry, lightly forested area near a lakeshore