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Marine Biology

Across
formed by plate tectonics
Igneous rock
Mass per unit volume
sediment on the ocean floor
The most essential part
Sideway or downward motion of the earths crust
Local variation in the earths magnetic field
motion of plates lithosphere
A planar fracture of rock
Natural home of organism
Hard outer portion /surface
A long narrow ditch
A very hard igneous rock consisting of mostly quartz
Down
Caused by upwelling at mid-ocean ridges
Creation of the Universe
A crack, split or breaking in something
When a fluid passes over a solid boundary
Calcium carbonate mud
Matter that settles at the bottom of a liquid
A fossil or fossil fragment that can only be seen by a microscope
Between the earths crust and core
Breaking down of rocks, soil and minerals.