<span>Basaltic magma (properly called mafic magma) forms in areas of the mantle where silica (SiO2) is low, but iron and magnesium is high. This usually and most famously occurs along spreading ridges, where oceanic crust is formed, but can occur anywhere -- including surface volcanoes, which can form flood basalts as we commonly know them.
hope it helps
and can you help me with some questions as well? f you dont mind
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Answer:
The value is 
Explanation:
From the question we are told that
The diameter of the storm is 
The wind speed is 
Generally the radius is mathematically represented as

=> 
=> 
Generally the angular velocity is mathematically represented as

=> 
=> 
A
d
b
b
a
c
c
c
a
b
a
b
d
d
a,c
100% 15/15 I promise these are the right answers
Answer:
17.4 cm
Explanation:
Power of lens = +1.75 diopters
Focal length of lens

This is a convex lens as focal the diopter given is positive which makes the focal length positive. Image distance will be negative.
v = -25

∴ The new near point is 17.4 cm