The first civilizations developed in North Africa, Middle East, and South and East Asia because of the advantages that this areas offered to the people inhabiting them. The biggest advantage were the big rivers with long and wide fertile plains beside them, which enabled the people to be involved in agriculture and produce big amounts of food and even reserves. Since the food problem was solved, they were able to concentrate on other things in their spare time and started to develop architecture, sciences, philosophy, writing systems...
Answer:
7....Mainland brown bear
.....ABC Brown bear
,,,,,Polar Bear
Explanation:
The mainland brow bear and the ABC brown bear, both share common ancestor 7. but, the polar bear also descended from ancestral specie 7. because not all descendant of ancestral specie 7 are included, that group is considered paraphyletic.
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).
C. personalities, often involving anger and ego clashes
Answer:
they are the skills that are needed by people for a particular job.
