Answer: Igneous rocks form when hot, molten rock crystallizes and solidifies. The melt originates deep within the Earth near active plate boundaries or hot spots, then rises toward the surface. Igneous rocks are divided into two groups, intrusive or extrusive, depending upon where the molten rock solidifies.
Fun fact: Igneous rock is the Latin word for fire.
Hope this helps!! ^^
Population density is the study of how many people live in some area as compared to other areas - this helps for example predict whether the area can preduce enough food for itself. It is measured in the number of people per a unit of area.
The correct answer then is:
<span> the number of people who live in a square mile or kilometer</span>
Answer:
C. North America, South America, Europe
The current is known as the <span>Gulf Stream</span>
Answer: D. Shipping technologies advanced immediately
