56. Which of the following is not a type of marine ecosystem?
a) Coral reef
b) Estuary
c) Tundra
d) Kelp forest
57. What is the name of the process by which water is absorbed into the ground and replenishes underground water sources?
a) Precipitation
b) Runoff
c) Infiltration
d) Evaporation
58. Which of the following is not a cause of ocean acidification?
a) Carbon dioxide emissions from burning fossil fuels
b) Pollution from industrial activities
c) Runoff of agricultural fertilizers
d) Release of sulfur dioxide from volcanic eruptions
59. What is the name of the process by which water is purified using a semipermeable membrane to remove impurities?
a) Reverse osmosis
b) Filtration
c) Distillation
d) Ion exchange
60. Which of the following is not a type of water storage system?
a) Reservoir
b) Aquifer
c) Pond
d) Desalination plant
