Animals (mostly bones) and trees
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Answer: Utilizing "street smarts" to solve a problem
Explanation:
Practical intelligence uses everyday knowledge for everyday tasks. Through process of elimination, we can get rid of 'Conducting careful analysis to solve a problem' and 'Breaking a problem into parts to solve.' And not giving up has nothing to do with intelligence, thats preseverance.
Increased in occupational specialization in industrial field
Humans gave up razor-sharp claws, fangs, sense and instincts in favor of intelligence. This brain-power has enabled humans to make the ultimate adaptation; that of making the environment adapt to us. We have domesticated crops and livestock, we irrigate, we wear clothes, build shelters, air-condition or heat our homes.
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