Because Astronomers use light-year instead of kilometers to measure distances in the universe because distances in space are so huge that km would be too large to manage.
It should be noted that a representative democracy simply means a form of democracy where the people for their representatives.
This is an incomplete information as the cartoon isn't provided. Therefore, an overview of the topic will be given.
A representative democracy establishes election procedures, separation of powers, checks and balances, etc. Examples of countries that use this form of democracy are India, United States, etc.
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D. Applying for more credit cards
It a double reed instrument kinda like a oboe
Is in the wind category