Exercises ANSWER IN BRIEF Q.1. Look at the diagram showing the positive feedback mechanism on page 13. Can you list the inputs that went into tool making ?What were the processes that were strengthened by tool making ? Diagram on page-13 Answer:- According to the diagram of the positive feedback mechanism, following are the inputs that went into tool making :- Upright walking Hands freed for using tools, carrying infants and objects Increase in brain size and capacity of brain Visual surveillance, long distance walking while foraging and hunting. Following is the list of processes that were strengthened by tool making :- Upright walking Increase in brain size and capacity of brain Visual surveillance, long distance walking while foraging and hunting. Q.2. Humans and mammals such as monkeys and apes have certain similarities in behaviour and anatomy. This indicates that humans possibly evolved from apes. ...
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