List three reasons why phytoplankton cannot survive at a hydrothermal vent

1. phytoplankton and other organisms harness sunlight , to create photosynthesis , near hydrothermal vent there is no sunlight

2. Phytoplankton need nutrients to grow, so when there's none at the surface they can't thrive, and there's no surface in hydrothermal vent

3.  The ocean's increasing acidity will most likely kill them.

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Explanation:

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1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.