It is false that the mathematical system in Mesopotamia was based on the number 7. O.
<u>Explanation:</u>
The mathematical system is Mesopotamia was based on the number 60 at it's base and not on 7. This numeral system is known as sexagesimal which had 60 at it's base.
This originated in the 3rd millennium BC and passed on to the ancient Babylonians and it is still used for measuring angles, times, geographic co ordinates. Since the statement that the mathematical system in Mesopotamia was based on number 7 is incorrect.
Answer:
The crust size remains constant because the older crust is melted at subduction zones.
Explanation:
The crust is constnatly created on Earth, but the crust is constantly getting destroyed as well. This situation leads to the total size of the crust being roughly at the same level, or rather constant, as one side a new one emerges, while at the same time, on the other side it gets destroyed.
The vast majority of the new crust is formed where there are divergent plate boundaries. Here, a gap opens up between the plates that move away and magma is constantly rising to the surface and creates new crust. When it comes to the destruction of crust, it occurs at subduction zones. Here, one plate moves below another plate, and as it does it reaches the upper mantle where it gets melted and recycled because of the high temperatures and pressure.
Definition of erosion (according to National Geographic): “Erosion is the geological process in which earthen materials are worn away and transported by natural forces such as wind or water.”
1. Describe the features that water erosion produces in your images (mountains, canyons, deserts, etc?) What do they have in COMMON?
Mountains: Water erosion would create a waterway around the mountains.
Canyons: Water erosion would create more area between the canyons.
Deserts: Water erosion would generally change the desert’s landscape by making the hills more downslope.
What they have in common: They all create changes to the landscape of different areas.
2. You can see water erosion even when you do not see water. How is this possible? Be clear!
This is possible by rain?
- I’m not exactly sure about this question.
The correct answer is “D”
