Mrs. Clark decides to do a demonstration for her class with a piece of notebook paper.Using a balance, Mrs. Clark discovers that the mass of the paper is 20 g.<span> She then takes the piece of paper and cuts it into several small pieces.</span><span> The cumulative mass of the small pieces is 20 g.</span><span> What has Mrs. Clark demonstrated for her class?</span><span>
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Answer:
Hand dexterity that allowed humans to create changes to their environment. This included cooking food and creating complex tools. Cooked food provided much more and better protein at less work. This meant that humans could spend their time on things other than chewing food.
<span>1. had no control over how they were governed.
2. could hold an office if they were chosen by lot.
3. were elected to office as representative officials.
or
4. took part in government only if they were wealthy.</span>
But, for about 100 years, thousands of years ago, ancient Athens had a direct democracy, or a government in which all citizens vote on rules and laws. It is one of their finest gifts from the Greeks! Representative Democracy: A representative democracy is a government whose citizens vote for representatives.
