<span>The coastline of the red sea that are African nations are Egypt Sudan and Eritrea. A red sea is the saltiest sea in the world and it is connected to the ocean without passing any river. The term "red" is due to the cyanobacteria that composes in that sea which is in color red.</span>
<span><span>Porosity is the amount of empty space in a rock or other earth material (like sand) - in other words, it's how much water a material can hold.
Permeability refers to how well water flows through a material - the flow is controlled by how large the pores are and how well connected the pores are in a given object.</span><span>Therefore, there these are two primary factors that limit the movement and the amount of water (or other fluids) retained in rocks/sedimentary materials.</span></span>
There were several immediate actions that were most likely taken in the Hawaiian islands to prevent the loss of life as the tsunami approached. Some of the immediate actions would of been to sound the alarms for the residents of the area, move to higher ground, and broadcast radio and television bulletins to alert the people. Ships would of also needed to be moved away from the coast.
