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Marine organisms extract dissolved oxygen from seawater through their gills, lungs, or skin. These structures have respiratory surfaces with a large surface area, allowing for efficient exchange of oxygen and carbon dioxide with the surrounding water. Oxygen diffuses from the seawater into the organism's respiratory surface and is then transported to the cells for cellular respiration.
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How do oxygen enter seawater?
Oxygen enters seawater primarily through diffusion from the atmosphere at the ocean's surface. This process allows oxygen to dissolve in the surface waters, where it can be used by marine organisms for respiration. Ocean mixing and circulation also help distribute oxygen throughout different depths of the seawater column.
What ion makes up 7.7 percent of the ions in seawater?
Magnesium ions make up approximately 7.7 percent of the ions in seawater. These ions play a key role in various biological processes and are important for the health of marine organisms.
What is true of dissolved oxygen in water?
Dissolved oxygen in water is essential for aquatic organisms to survive and thrive. It is crucial for the respiration of fish and other marine animals. Factors such as temperature, water depth, and plant life can affect the levels of dissolved oxygen in water.
What are the three most important dissolved gases in seawater?
The three most important dissolved gases in seawater are oxygen, carbon dioxide, and nitrogen. Oxygen is essential for marine organisms to respire, carbon dioxide plays a role in regulating pH levels and is used by marine plants during photosynthesis, and nitrogen is important for the growth of marine plants and algae.
How much percent of oxygen does the ocean have?
The ocean typically contains about 21% oxygen dissolved in the water. This dissolved oxygen is essential for marine life to survive and thrive. Oceanic oxygen levels can vary based on factors such as temperature, salinity, and the presence of organisms that consume oxygen.
What word describes marine organisms?
Living things that live in seawater.
What is seawater classified as?
Seawater is classified as a type of saline water, primarily due to its high salt content, which averages about 3.5% salinity. It is composed of various dissolved minerals, with sodium chloride being the most prevalent. Seawater is crucial for marine ecosystems, influencing weather patterns and global climate. Additionally, it serves as a habitat for countless marine organisms.
Where do some of the dissolved solids present in sea water come from?
Dissolved solids in seawater come from various sources, including weathering of rocks on land, volcanic activity, and underwater hydrothermal vents. Additionally, runoff from rivers, atmospheric deposition, and biological processes like the excretion of marine organisms also contribute to the presence of dissolved solids in seawater.
How do biological processes influence the type and amount of gases dissolved in seawater?
Biological processes such as photosynthesis and respiration by marine plants and animals influence the type and amount of gases dissolved in seawater. During photosynthesis, marine plants absorb carbon dioxide and release oxygen, which increases the dissolved oxygen concentration in seawater. Similarly, during respiration, marine organisms consume oxygen and release carbon dioxide, which reduces the dissolved oxygen concentration and increases carbon dioxide levels. These processes play a crucial role in maintaining the balance of gases in seawater and supporting marine ecosystems.
Is oxygen a gas dissolved in sea water?
Oxygen does dissolve into sea water, as do many other gasses such as CO2.
How do freshwater marine organisms get oxygen?
Freshwater marine organisms obtain oxygen through diffusion across their body surface or through specialized respiratory structures like gills. They extract dissolved oxygen from the water around them to support their metabolic processes. Some organisms, like fish, have a more efficient respiratory system to extract oxygen from water.
When ice forms from seawater the remaining seawater will be what?
When ice forms from seawater, the remaining seawater becomes saltier because the ice is primarily composed of freshwater. As the ice freezes, it excludes most of the dissolved salts, leading to an increase in salinity in the surrounding water. This process can affect local marine ecosystems and influences the density and circulation of seawater. Consequently, the remaining seawater's properties change, which can impact marine life and ocean currents.
What are two kinds of solid structures made by marine animals from minerals they extract from seawater?
Two kinds of solid structures made by marine animals from minerals they extract from seawater are coral reefs, formed by coral polyps extracting calcium carbonate to build their intricate structures, and mollusk shells, like those of clams and oysters, made from calcium carbonate as well.
What two gases are vital to marine life?
Gases are also dissolved by seawater. Carbon dioxide(CO2) is dissolved in ocean water and used by phytoplankton to produce plant matter. Oxygen and nitrogendissolved at the surface from the atmosphere are also present in seawater. Conversely, the ocean also releases these gases into the atmosphere.
What two gases vital to marine life?
Gases are also dissolved by seawater. Carbon dioxide(CO2) is dissolved in ocean water and used by phytoplankton to produce plant matter. Oxygen and nitrogendissolved at the surface from the atmosphere are also present in seawater. Conversely, the ocean also releases these gases into the atmosphere.
How do marine organisms obtain phosphorus?
Marine organisms obtain phosphorus primarily from dissolved inorganic phosphate in the water column or from consuming other organisms that contain phosphorus in their tissues. Phosphorus is an essential nutrient for growth, energy transfer, and cellular processes in marine organisms.
Dissolved oxygen in the ocean water does what?
Dissolved oxygen in ocean water is crucial for the survival of marine life. It is used by fish and other aquatic organisms for respiration. Low levels of dissolved oxygen can lead to stress or death among marine organisms.
