Answer: b The artisans in this complex village used natural materials for construction.
It lets elected officials know how citizens wish them to act <span />
Answer:
88% of rocks are almost completely devoid of fossils
Explanation:
Precambrian era which means "Before the Cambrian period". Geologists have found that there are some hard to discern fossils in some Precambrian rocks. Precambrian covers almost 90% of the entire history of the Earth whereby 88% of rocks are almost completely devoid of fossils which has been divided into three eras: The Hadean, The Archean and The Proterozoic
Answer: <u>Skinner</u>'s theory of <u>operant</u> conditioning.
Operant conditioning is a system that attempts to influence the strength of a behaviour by giving punishments or rewards. It was developed by B. F. Skinner in his 1938 book: <em>"The Behaviour of Organisms: An Experimental Analysis."</em>
The system can be divided in reinforcement, which is directed towards increasing the behaviour, or punishment, which tries to reduce it.
Both reinforcement and punishment can further be divided into positive (adding a stimulus) or negative (removing a stimulus).
The causes of the growth and decline of civilizations, and their
expansion to a potential world society, are complex. However,
civilizations require not only external advances to prosper, but also
the maintenance and development of good social and ethical relationships usually grounded in religious and spiritual norms.
