Even when the supply of inorganic nutrients to the surface is high, due to for example upwelling, the absolute concentration of nutrients in the surface may still be low.
Answer the following statement true (T) or false (F)
True
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Earth rotates
A) from east to west in the NH, and west to east in the SH. B) from east to west. C) from west to east. D) from south to north. E) from west to east in the NH, and east to west in the SH.
The Earth is about 4.6 billion years old.
Answer the following statement true (T) or false (F)
How and why do glaciers form and advance?
A. Glaciers advance when accumulation equals ablation. B. Glaciers advance when accumulation exceeds ablation. C. Glaciers advance when accumulation is less than ablation.
Which one of the following concerning mid-ocean ridges is false?
A) Sediments include thick siliceous ooze deposits and sandy turbidite beds. B) Terrigenous sediment coverings are very thin or absent. C) They are sites for submarine eruptions of basaltic lava. D) They are where young lithosphere is added to the edges of spreading, oceanic plates.