It's called weathering and erosion.
The reason is that current methods used to “calibrate” models often render them inaccurate. That's what Jonathan Carter stumbled on in his study of geophysical models.
If you want a more detailed explanation here’s a explanation from quizlet.
Answer:
newly erupted oceanic crust
Explanation:
now get lost
Given Parameters;
Coordinates = (-8,6), (5,-7)
x₁ = -8 y₁ = 6
x₂ = 5 y₂ = -7
Unknown:
The midpoint of the line = ?
Solution:
The midpoint of any two points is given as;
x
, y
=
,
Input the parameters and solve;
x
, y
=
, 
=
, 
The midpoint between the two points are
, 
Answer: B
Explanation:
Volcanoes typically occur underground when they do. "Although most of the active volcanoes we see on land occur where plates collide, the greatest number of the Earth's volcanoes are hidden from view, occurring on the ocean floor along spreading ridges." (https://oceanservice.noaa.gov/facts/volcanoes.html)