Sea water quality

Let's review the test:

Question 1

The most correct answer is b.
Since the water quality requires measurements of chemical, physical and biological parameters for all uses (e.g. urban use, drinking water, bath in beaches, agriculture).

Bibliography
https://www.usgs.gov/special-topic/water-science-school/science/water-quality-information-topic?qt-science_center_objects=0#qt-science_center_objects
https://nmsfloridakeys.blob.core.windows.net/floridakeys-prod/media/archive/scisummaries/wqmonitoring.pdf

Question 2

The most correct answer is b.
The physical properties of the water quality are: Alkalinity, Biological Oxygen Demand, Water Color, Dissolved Oxygen, Conductivity (Electrical Conductance), Hardness of Water, Nitrogen, pH, Phosphorus, Turbidity. The answer a) is partially correct but only two of the physical properties are mentioned. Furthermore, answer c) refers to soil temperature which does not concern water properties.

Bibliography
https://nmsfloridakeys.blob.core.windows.net/floridakeys-prod/media/archive/scisummaries/wqmonitoring.pdf

Question 3

The most correct answer is c.
The water quality may be affected by agricultural activities as well as from various anthropogenic activities (such as industry) that take place close to aquatic media and systems. So, the correct answer is c) since pesticides or fertilizers may affect directly water media or indirectly (through the aquifers).

Bibliography
https://www.freedrinkingwater.com/water_quality/quality2/j-19-08-key-factors-influencing-water-quality.htm

Question 4

The most correct answer is b.
However, answer c is partially correct since scientists use the water quality data for understanding the oceans. A number of physico-chemical parameters known as indicators are always monitored to assess water quality.. Chemical and biological indicators are affecting directly human and thus living creatures whose presence in water suggests that there is a likely possibility of contaminated water.

Bibliography
https://www.encyclopedia.com/environment/energy-government-and-defense-magazines/marine-water-quality

Question 5

The most correct answer is c.
Most of the aquifers reach the coastal zone. In case of contaminated groundwater, the coastal system that interacts with the aquifer will be also affected. So, any contamination at the terrestrial environment will be propagated to the aquatic media via the channels that are governed by the submarine groundwater discharge systems.

Bibliography
https://en.wikipedia.org/wiki/Groundwater_pollution
https://www.usgs.gov/centers/pcmsc/science/submarine-groundwater-discharge?qt-science_center_objects=0#qt-science_center_objects

Question 6

The most correct answer is a.
However, the answer b for the industry is the second contamination source and the third is food consuming habits. According to the National Oceanographic Institutes, more than 70 percent of marine contamination comes from terrestrialcontamination sources. On a large scale the contamination sources come from agriculture, industry, vehicle emissions, and products used at home.

Bibliography
https://blog.arcadia.com/main-causes-water-pollution-u-s/

Sea water quality

Self Assessment Test

Water quality describes:

Water quality is measured by:

Water quality is affected by:

Good water quality is important to marine life because:

If groundwater gets contaminated.:

The main cause of water pollution:

a. The mobility of the water in the aquatic system observed by sampling or monitoring the temperature and the conductivity.
b. The condition of the water, including chemical, physical and biological characteristics, usually with respect to its suitability for a particular purpose such as drinking or swimming.
c. The percentage of key contents/constituents of the water.

a. Dissolved Oxygen, physical parameters.
b. The concentration of dissolved oxygen, bacterial levels, the amount of salts (salinity) or the amount of material suspended in the water (turbidity).
c. Soil and water temperature.

a. Storms and overuse of water resources.
b. Snowfalls
c. Substances like pesticides or fertilizers that can negatively affect marine life when present in certain concentrations.

a. It helps to keep a marine ecosystem stable
b. Water quality affects biological organisms.
c. Scientists better understand the oceans processes.

a. Then only lakes can became polluted.
b. Then surface water like lakes and streams isn’t impacted by pollution.
c. Then the coastal zone can become polluted due to the discharges of groundwater into the sea.

a. Agriculture activities
b. Factories/Industry
c. Food consuming habits.