When viewed from the equator (0 degrees latitude), Polaris lies on the northern horizon. As an observer moves northward--say, to Houston, Tex. (30 degrees latitude)-- Polaris is located 30 degrees above the northern horizon.
The crust and the upper mantle.
The answer to your question is a
The area where the sea floor is oldest is in the area of the subduction zone near an ocean trench and is denoted as option C.
<h3>What is Subduction zone?</h3>
This is referred to the area which is characterized by constant collision of two or more tectonic plates.
This zone contains the oldest sea floor because the oldest ocean crust is being pushed under a continental crust and destroyed and is usually farther from the mid-ocean ridges.
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Answer:
Porphyritic texture
Explanation:
Porphyritic texture is an igneous rock textures that is characterized by two distinct mineral sizes.
