We have 8 continents on the Earth
Sandra is actually looking at the borders of the countries. The correct option among all the options that are given in the question is the first option or option "A". The dark lines separating each of the countries on the map of Europe are actually the borders of the countries in Europe. I hope the answer helps you.
<span>Marco Polo was known for his extensive travel through-out _China_______ as described in his books about his travels.
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Our solar system is heliocentric.
Helio is greek for Sun centered, and our solar sytem relies and revolves on the sun.