Answer:
"In Brief. Sometime between 195,000 and 123,000 years ago, African Homo sapiens populations plummeted, thanks to cold, dry climate conditions that left much of the land uninhabitable. Everyone alive today is descended from people from a single region who survived this catastrophe."
Explanation:
i got it off google..hope it helps you.
Answer: Pavlov, Watson and Skinner
Explanation: Pavlov is a famous Behavioral psychologist who tried to show through his experiment that Dogs can give a conditioned response to particular set of stimuli such as the sounding of Bell.
Watson is a Behavioral psychologist who believes that only Behaviors that can be observed, recorded and measured are of value in the study of human Behavior.
Skinner also known as the Father of Operant conditioning states that Individual's response to stimuli in an environment is the main determinant of Behavior.
Answer: A. The states successfully amended the Articles to provide a strong central government
The Articles of Confederation does not only provide strong government to people but it is also the basis of the most significant decisions that are to be made by the state.