I believe that the correct answer would be CO2.
Answer:
Antarctica is Earth 's southernmost continent. It contains the geographic South Pole and is situated in the Antarctic region of the Southern Hemisphere, almost entirely south of the Antarctic Circle, and is surrounded by the Southern Ocean.
Explanation:
Answer:
The map key explains what they mean. Map keys are often boxes in the corner of the map, and the information they give you is essential to understanding the map. Symbols in the key might be pictures or icons that represent different things on the map
Explanation:
2. faster movement of people, products, and ideas
