A shield volcano is a type of volcano usually built almost entirely of fluid lava flows. They are named for their low profile, resembling a warrior's shield lying on the ground. This is caused by the highly fluid lava they erupt, which travels farther than lava erupted from stratovolcanoes
Answer:
D) 54 degrees
Explanation:
The curves on the angles show which ones are equal to each other based on how many curves there are. Since both angle GDF and angle EDF have one curve, they are equal in their angle measurements.
Also the subject is mathematics not geography; you might be thinking of geometry which is part of mathematics. :)
Usually determined by changes in the biota.