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Westkost [7]
2 years ago
7

1: How does sea-floor spreading occur? A, New materials are being added to the asthenosphere.

Biology
1 answer:
marin [14]2 years ago
4 0
1. <span>D. Molten material beneath Earth's crust rises to the surface.

2. </span><span>A. The mid-ocean ridges
(This is asking for what form. The Andes is a mountain range in Peru)

3. </span><span>C. Subduction causes the ocean floor to sink into deep ocean trenches.
(Subduction is when part of the ocean floor sinks under a deep-ocean trench and return the the mantle; this is caused by the movement of tectonic plates)

:)
</span>
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