Answer: The Earth's crust that formed these mountains was once covered with an ocean
Answer:
D. Trench
Explanation:
This is definitely a trench, I mean just look at it. When I think trench I see that. I'm also sorry to inform you that your teacher stole the image from goo,gle. It is the second image that pops up when you search "ocean trench."
Answer:
Boot
Explanation:
The geography of Italy looks like a boot
Answer:
An energy system is a system primarily designed to supply energy-services to end-users.[1]:941 Taking a structural viewpoint, the IPCC Fifth Assessment Report defines an energy system as "all components related to the production, conversion, delivery, and use of energy".[2]:1261 The field of energy economics includes energy markets and treats an energy system as the technical and economic systems that satisfy consumer demand for energy in the forms of heat, fuels, and electricity.[1]:941
