Micro 401 Exam 1 UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Water in the ocean makes up more than ____ % of biosphere - CORRECT
ANSWER 90% of biosphere
Distribution of water in Northern hemisphere - CORRECT ANSWER 61% water
Distribution of water in Southern hemisphere - CORRECT ANSWER 81% water
Depths of 3000-6000 m predominate - CORRECT ANSWER COLD, DARK, HIGH
PRESSURE
Land impacts ocean by: - CORRECT ANSWER freshwater, nutrients, dust, plants,
animals, microbes, other organic material
Ocean impacts land by: - CORRECT ANSWER Marine aerosol, tsunamis, other
waves, guano deposition
Seawater comprised mainly of: - CORRECT ANSWER Na+, Cl-
How much atmospheric gases enter the ocean? And what is mostly comprised of? -
CORRECT ANSWER 10^13 t/year of atmospheric gas; comprised mainly of O2 and
CO2
What are biogenic substances? - CORRECT ANSWER non-carbon; but of biological
origin [silica + caco3]
What is the ph of the ocean? - CORRECT ANSWER varies between 7.5-8.4
QUESTIONS AND CORRECT ANSWERS
Water in the ocean makes up more than ____ % of biosphere - CORRECT
ANSWER 90% of biosphere
Distribution of water in Northern hemisphere - CORRECT ANSWER 61% water
Distribution of water in Southern hemisphere - CORRECT ANSWER 81% water
Depths of 3000-6000 m predominate - CORRECT ANSWER COLD, DARK, HIGH
PRESSURE
Land impacts ocean by: - CORRECT ANSWER freshwater, nutrients, dust, plants,
animals, microbes, other organic material
Ocean impacts land by: - CORRECT ANSWER Marine aerosol, tsunamis, other
waves, guano deposition
Seawater comprised mainly of: - CORRECT ANSWER Na+, Cl-
How much atmospheric gases enter the ocean? And what is mostly comprised of? -
CORRECT ANSWER 10^13 t/year of atmospheric gas; comprised mainly of O2 and
CO2
What are biogenic substances? - CORRECT ANSWER non-carbon; but of biological
origin [silica + caco3]
What is the ph of the ocean? - CORRECT ANSWER varies between 7.5-8.4
