Earthquakes would be the correct answer
Answer:
Natural elements such as metals, wood, and recourses such as H20,C02,and o2.
Iron, copper, and aluminum are 3 metals that are commonly used in todays economy.
Answer :A
“As a cold front moves into an area, the heavier (more dense) cool air pushes under the lighter (less dense) warm air, causing it to rise up into the troposphere. ... As the cold front passes, winds become gusty. There is a sudden drop in temperature, and also heavy rain, sometimes with hail, thunder, and lightning.”