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.
14. Which of the following statements best describes 21st-century migration flows to the United States?<span>Large numbers of immigrants and migrant workers, including skilled and unskilled laborers and many with advanced degrees, are coming to the United States from South and Central America.
Plz give me branliest</span>
Answer:
tightly packed group of older stars
large grouping of more than two stars
loose, disorganized star cluster held together by gravity
Answer:
<u>Time is measured in Lunar month </u>
Explanation:
- The lunar month is the time the moon takes to pass through each phase i.e new moon to half and then to the full moon etc. Taking about 29 days, 12 hours, 44 minutes and 3 seconds to complete this rotation on its axis.
- Thus the moon only takes 27.3 days to complete this action. Thus as the moon goes back in its orbit it takes 2.2 days to catch up. Moon also has the same elliptical longitude as that of the sun as seen from the earth's surface.
- The motion of the moon is in an eastward direction along with the motion of stars, thus it shows the same face to earth every day. This is evident as it moves just 13 degrees in 24 hours.
Earth's gravity pulls matter downward, toward its center. It pulls precipitation down from clouds and pulls water downhill.
