Question

QUESTION 4 DOK 2 5 points

Paragraphs 2 and 3 discuss many factors that form ions in
or remove ions from seawater. These factors offset to keep
the salinity of seawater stable.
Move each statement to identify it as a factor that forms or
removes ions.
[
Factors That Increase
Concentration of lons
Factors That Decrease
Concentration of lons
Drag each item to the correct category above.
Carbonic acid dissolves
minerals.
Evaporation removes water
from the ocean.
lons from eroded rock on
land are transported into
oceans by rainwater and
streams.
Marine life takes in ions.
Volcanic activity adds gases
to water.
New minerals form in the
ocean.

Answer 1

The salinity of seawater is controlled by a balance of processes, with factors such as carbonic acid dissolving minerals, eroded rock ions, and volcanic activity adding ions; and evaporation, marine life uptake, and formation of new minerals decreasing ion concentration.

Step-by-step explanation:

The salinity of seawater is a balance between processes that add ions to the seawater and those that remove ions. Factors that increase the concentration of ions in seawater include:

• Carbonic acid dissolving minerals, which releases ions into the water.
• Ions from eroded rock on land, which are carried into oceans by rainwater and streams.
• Volcanic activity, which adds gases that can form ions upon dissolution in water.

Conversely, factors that decrease ion concentration include:

• Evaporation, which removes water but leaves the ions behind, effectively lowering the concentration in the remaining seawater.
• Marine life taking in ions, which removes them from the seawater.
• The formation of new minerals within the ocean, which sequesters ions from the water.