Author Question: The presence of a copper-colored pigment called ___________ has an effect on the darkness of a ... (Read 104 times)

yoooooman · **on:** Aug 11, 2018

The presence of a copper-colored pigment called ___________ has an effect on the darkness of a person's skin like melanin.

Fill in the blank(s) with correct word

Question 2

Cooperative work groups are found:

a. in all societies worldwide.
b. only in illiterate, nonindustrial societies.
c. only in extended households with married parents, children, and grandparents.
d. only in horticultural societies.
e. in agricultural societies, although there are special times where it occurs in industrial societies.