Human evolution and why it matters

I have to answer this questions
Why is the study of this subject relevant according to scholars such as Carl Sagan, Richard Leaky. Donald Johanson?
Who are the aforementioned academics and from what academic perspectives have they approached the study of this issue?
What disciplines contribute to the construction of this knowledge, explain
What questions have you asked yourself and how have you been building the body of knowledge that allows you to give both hypothetical and formal answers to those questions?
How is our notion of time conceptualized in terms of this discipline of knowledge … that is, how long does the appearance of the species from which we have evolved from, where do they come from, how did they spread throughout the world?
What are the peculiarities of Homo sapiens according to these scholars? Or in other words, what defines and distinguishes us as a species? Examples mentioned and explained by these authors in the assigned resources (bipedalism, symbolic thinking, the appearance of language, the development of tools, etc.?

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