Answer: contour lines.
Topographic maps are easily recognized by their contour lines.
Answer:
Wegener
Explanation:
Seems like an officer in the military i think.
Italy is surrounded by sea, meaning that there is always accessible trade routes through water. In earlier days, water trade routes became much more popular due to not having to travel through rough terrain. Therefore, the economy boosted as trade increased.
Answer:
Humans produce too much carbon dioxide, and because of the chemical composition of water, more specifically, the water in the ocean, it is inclined to absorb it, thus making it acidic. Furthermore, human waste contributes to the acidity of the oceans.