Which of the following reduces the rate of oxygen solubility in water ..
Dissolving more carbon dioxide
Increase in the rate of photosynthesis
Water turbulence and waves
Decrease in water salinity
When comparing the solubility of Co2 and the solubility of O2 in water at different temperatures, we find that ..
Solubility of both gases is equal at high temperatures
The solubility of O2 is higher than Solubility of CO2 at low temperatures
Solubility of both gases is equal at low temperatures
Solubility of CO2 is less than solubility of O2 at high temperatures
If the amount of oxygen dissolved in one liter of river water at a temperature of 20°© is about 10 mg, what is its potential amount in one liter of ocean water when the temperature drops .... mg
12
7.5
5
10
Which human activities reduce the pH value of freshwater lake water?
Agricultural drainage water for the lake
Using sailboats for recreation
Overfishing
Planting trees on the sides of the lake
The ratio between the concentrations of carbon dioxide and oxygen gases in the air ....
0.05
500
0.002
0.03
Which of the following increases the activity of fish in the aquatic environment
Increase the percentage of dissolved oxygen in the water
Increase the salinity of the water
Decrease the pH value of the water
Increase the impact of human activities on the water
Studies have shown that the temperature of the upper part of the ocean waters has risen by a certain amount every ten years during the last hundred years. In light of what you have studied, which of the following is one of the main reasons for this...
Decrease in ocean acidity
Increase in the percentage of carbon dioxide in the air
Increase in the alkalinity of ocean water
Decrease in the percentage of dissolved salts in the water
Which of the following reduces the percentage of carbon dioxide in the water
Industrial pollution
Gas exchange between water and the atmosphere
Photosynthesis of algae
Respiration of marine animals
The lack of gas resulting from the respiration process in water doesn't affect the flow of energy in aquatic food chains
True
False
If the rate of energy flow from green algae to the aquatic larvae that feed on them decreases, this may be an indication of ..
Increase in the number of mollusks that feed on the larvae
Organic remains have caused algae to lose their ability to produce energy
Increase in the percentage of dissolved oxygen in the water
Decrease in the percentage of carbon dioxide dissolved in the water
All of the following supports the balance of the aquatic ecosystem except...
Increase in the concentration of dissolved oxygen in water
Increase in water temperature
Diversity of aquatic organisms
A plant in a certain aquatic environment converts a percentage of solar energy amounting to X into chemical energy stored in its food. If this percentage decreases over time, which of the following is associated with this…
Decrease in the percentage Oxygen in water
Increase in the activity of organisms
Increase in the pH value of the water
Increase in the number of molluscs
Which of the following, if increased, leads to an increase in the percentage of dissolved oxygen in the water .
The process of photosynthesis
Temperature Water
Concentration of salts and water
Air pollutants
Which of the following statements is correct about life in the aquatic environment
Increased water acidity is accompanied by a decrease in calcification
Increased acidification is accompanied by increased respiration
Increased respiration is accompanied by increased calcification
Increased organic decomposition in water is accompanied by a decrease in water acidity
Which of the following factors lead to an increase in the percentage of carbon dioxide dissolved in the water
Increase in the percentage of phytoplankton and increased temperature
Increase in the salinity of water and industrial pollution
Decomposition of organic matter and decreased temperature
Respiration of aquatic organisms and increased salinity of the water
Which of the following increases the acidity of water in water bodies
Increase in the amount of heat absorbed by water
Rain loaded with carbon dioxide
Formation of calcium carbonate
Increase in the percentage of oxygen in water
Calcium bicarbonate is sparsely soluble in water
The factor(s) that affect the rate of dissolution of oxygen and carbon dioxide gases in water is / are ...
Temperature
Type of water (fresh or salty)
All of the above
Availability of waves and water turbulence
Calcium carbonate is soluble in water
Which of the following represents an increase in its percentage in seawater that is harmful to mollusks and corals
Carbon dioxide gas
Oxygen gas
Phytoplankton
Seaweed
Which of the following is not considered a source of dissolved CO2 in the aquatic environment
Breathing of fish and molluscs
Pollutants from some factories that are discharged into the water
Sodium chloride salts dissolved in water
The atmosphere
What is the effect of the high level of dissolved oxygen in water on the efficiency of the respiration process in living organisms?
Enhances it
Hinders it
Does not affect it
Reduces it
Which of the following is not a result of increasing the percentage of dissolved carbon dioxide in water ..
Increase in the ability of plants to produce food
Decrease in the pH value of water
Difficulty in breathing aquatic organisms
Converting calcium bicarbonate to calcium carbonate
Which organisms are directly affected in the food chain by the decrease in the concentration of carbon dioxide in the water?
Producers
Decomposers
Small fish
Predatory fish