CHAPTER FOURTEEN REVIEW QUESTIONS 1.) Define salinity. What is the average salin
ID: 157709 • Letter: C
Question
CHAPTER FOURTEEN REVIEW QUESTIONS
1.) Define salinity. What is the average salinity of the ocean? Why do oceanographers typically express salinity in parts per thousand?
2.) What are the six most abundant components (elements) dissolved in seawater? What is produced when the two most abundant elements are combined?
3.) Why is desalination not likely to be a significant source of water for agriculture in the foreseeable future?
4.) Describe the oceans layered structure. Why does the three layer structure not exist in high latitudes?
5.) List three physical factors that are used to divide the ocean into marine life zones. Describe how each factor influences the abundance and distribution of marine life.
Explanation / Answer
1) measure of all salts dissolved in water. It is apptox 0.35 measured in parts perthousand because salt is solid and it means 35 grms salt in 1000 grms water
2) Na, so4,Mg, Ca,chlorine and hydrogen. When two of the largest combine they form salt NaCl
3) because other dissolved salt make the earth surface barren and hinders the growth
4) mixed layer, main thermocline anf deep water layer. It doesnt appear at heights because the surface becomes shallow and deepness reduces
5 availability of light, oxygen conc and salts are the three factors
availability of light makes species autotrophs or heterotrophs
oxygen conc makes them anaerobic and salts helps them retain body shape by osmosis