Iron is Often Limiting

Question

Iron is often limiting
A) At the heads of estuaries
B) In areas remote from continents
C) Toward the end of an estuarine phytoplankton bloom
D) To diatoms but not cyanobacteria

Accepted Answer

Iron is often limiting in areas remote from continents because these areas are far from terrestrial sources of iron, which is a critical micronutrient for phytoplankton growth.