The main source of energy in the food web is..
Nutrients
The sun
Plants
Insects
Where does energy begin to flow in the aquatic ecosystem?
From predatory fish
From producers such as algae and plants
From zooplankton
From herbivorous fish
Predatory fish contribute to maintaining the ecological balance in aquatic systems by ..
Controlling the number of prey
Purifying water from pollutants
Increasing the amount of nutrients
Reducing the growth of aquatic plants
Excessive consumption of small fish by predatory fish leads to... Zooplankton
No effect on
Decreased numbers
Complete disappearance of zooplankton
Increased numbers
Which of the following statements is true about the vapor pressure of very dilute solutions?
Proportional to the square of the concentration of the solute
Inversely proportional to the concentration of the solute
Directly proportional to the concentration of the solute
Not affected by the concentration of the solute
The collective properties of water depend on the number of ... and do not depend on its type
Oxygen atoms
Covalent bonds
Solute particles
Solvent particles
Predatory fish help maintain the balance of coral reefs by...
Increasing coral reef growth
Providing nutrients to coral reefs
Controlling the numbers of small organisms such as sea urchins
Feeding on coral reefs
The likely result of an imbalance in nutrient levels in the aquatic system is...
Improving water quality
Decreasing water temperature
Disrupting the ecosystem
Increasing biodiversity
Which of the following factors is considered an essential element in sustainable development?
Increased consumption of natural resources
Development of clean technology
Destruction of natural habitats
Lack of interest in the environment
The potential impact of increasing the number of predatory fish on the aquatic ecosystem is..
Unbalanced increase in the number of small fish
Decrease in the number of algae
Better balance in the food chain
Increased biodiversity
Which of the following is considered a characteristic of salt-tolerant organisms?
Can only live in fresh water
Does not need osmotic adaptation
Can live in a wide range of salinity concentrations
Live only in salt water
The basic concept of ecological balance may express..
Preservation of biodiversity through food relations
Unrestricted consumption of resources
Reducing the number of living organisms
The natural flow of energy in the aquatic ecosystem affects...
Regulated the numbers of organisms at each level of the food chain
Increased water pollution
Increased consumption of food resources
Reduced biodiversity
Which of the following is considered an adaptation that helps fish live in salt water?
Reduced food intake
Increased urine production
Reduced water intake
Increased salt absorption
The most effective way for human participation in environmental policies is
Reducing environmental awareness
Overfishing
Participating in community dialogues
Ignoring government policies
A process occurs ... when the vapor pressure equals the atmospheric pressure
Sublimation
Condensation
Evaporation
Freezing
Carrying ... organisms to different depths of water or to the surface of the water
Particles
Density
Water currents
Coral reefs
What are the possible consequences of not maintaining ecological balance in aquatic systems?
Increasing environmental prosperity
Improving fish productivity
Enhancing biodiversity
Disruption of food chains
When the temperature of pure water increases ... the vapor pressure
Is not regular
Increases
Remains constant
Decreases
Increasing the concentration of dissolved substances in water increases ... Water
Color
Volume
Pressure
What is the main factor that affects the distribution of living organisms in aquatic environments?
Water color
Temperature
Water depth
Osmotic adaptation
The physical factor that the food chain needs and comes from outside the planet Earth is..
Light
Water
CO2
Soil salts
The vapor pressure of water... with height above sea level
Doubles
Which of the following properties of a liquid does not affect its vapor pressure?
Strength of attraction between molecules
Mass of liquid
Type of molecules
What are the essential nutrients that are necessary for the growth of plants and algae in aquatic systems?
Carbon and oxygen
Sodium and potassium
Nitrogen and phosphorus
Calcium and magnesium
All of the following control the movement of whales in the oceans except
Concentration of salts in the water
Water density
Water volume
Water movement
Which of the following factors is a major cause of the variation in water quality in the oceans..
Biodiversity
Photosynthesis
Use of pesticides
The concept of sustainable development in the environmental context refers to...
Excessive consumption of resources
Reducing biodiversity
Meeting the needs of the present generation without compromising the capabilities of the Future generations
Ignoring environmental issues
When the external pressure on the surface of the liquid increases, the vapor pressure...
Not affected
Not regular
One of the importance of maintaining ecological balance is that it helps to...
Increasing water temperature
Increasing commercial fishing opportunities
Maintaining the stability and continuity of the ecosystem
Which of the following factors affects the vapor pressure of the liquid?
Shape of the container
Volume of the container
Color of the liquid
The negative effects of overfishing are...
Enhancing the health of marine organisms
Causing algae blooms
Reducing prey numbers
Human activities negatively affect the flow of energy in the aquatic ecosystem through ..
Enhancing the flow of energy
Increasing the number of productive organisms
Increasing the efficiency of photosynthesis
The concentrations of dissolved substances in water affect the following except ..
Color of living organisms
Properties of matter
Distribution of living organisms
The vapor pressure of water ... when an amount of table salt is dissolved in it
Which of the following factors has the greatest effect on the distribution of fish in the oceans?
Food availability
Surface wind speed
What is the main effect of osmotic adaptation on organisms in aquatic environments?
Determines the age of living organisms
Affects the color of organisms
Determines the size of organisms
Affects the balance of water and salts in their bodies
Vapor pressure in solutions ... Vapor pressure in pure water
Equal to
Greater than
Less than
Half
Which of the following factors does not affect the amount of decrease in vapor pressure Solution?
Volume of solution container
Concentration of solute
Type of solute
The primary function of producers in an aquatic ecosystem is...
Consuming other organisms
Purifying water
Regulating water temperature
Performing photosynthesis