What is the connection between organisms in a stream and the dissolved oxygen level?
Organisms in streams need oxygen to live when lacking dissolved oxygen it will kill these organisms. edit: unless the organisms in the stream are photosynthetic, in which case they will increase the oxygen levels. however, by far, most organisms in a stream are not photosynthetic and oxygenation occurs solely through aeration and surface area dissolving from the air. so, to answer the question, organisms (most organisms which aren't plant-based photosynthetic organisms) decrease the amount of oxygen in a stream. edit: a flowing stream has turbulence which helps aerate the water, increasing dissolved oxygen. In contrast, stagnant water tends to be low in dissolved oxygen, except near the surface. Multicellular animals (like fish) need a good supply of dissolved oxygen to thrive.
How might you account for dissolved oxygen concentrations of such a low value at a temperature of 25C?
The main dissolved gases found in the ocean include, but are not limited to: carbon dioxide, oxygen, and hydrogen. Dissolved gases, especially oxygen, are important, since it provides dissolved oxygen for aquatic organisms to "breathe" in. Also, the carbon dioxide dissolved in the ocean helps lessen the amount of carbon dioxide in the environment.
One of the biggest effects of pollutants on dissolved oxygen is that some pollutants are nutrients for organisms that consume (or occasionally produce) oxygen. If the organisms are well fed, they can consume nearly all of the dissolved oxygen. Some pollutants will also chemically react with the oxygen to remove it from the water as well, but this is usually a much lesser effect. These two phenomena are measured as BOD (biological oxygen demand) and…
Water can be depleted of it's oxygen by a number of different ways. Short of putting the water in a vacuum and "sucking" the dissolved oxygen out, oxygen-breathing organisms such as fish take oxygen from the water through respiration, for example. It is unlikely a large body of water to become completely deoxygenated due to the presence of photosynthetic aquatic organisms (plants) and the fact that oxygen is also dissolved in the water at the…
The only gas that most organisms need is oxygen. In most water, there is some dissolved oxygen. Organisms that live get their oxygen from water (such as fish, crabs, squid, etc) either have special organs called gills for extracting the oxygen from the water, or they simply absorb it through their skin.
Well, dissolved oxygen impacts water quality because if the level of the dissolved oxygen is too low then organisms can die. _________________________________________________________________ That is okay, but I want to what dissolved oxygen tests for. ------ For the water quality are tested: - total oxygen demand (TOD) - biochemical oxygen demand (BOD) - chemical oxygen demand (COD) - sometimes, carbonaceous biochemical oxygen demand (CBOD) For details about the analytical procedures I recommend you to read a…
Input and output describes the connection between biodegradable waste and compost. A biodegradable waste is animal or plant matter that breaks down into its base compounds under the effects of heat, light, micro-organisms, moisture and oxygen. The breakdown results in dark, fresh, nutrient-rich compost.
Yes organisms take oxygen from the air and aquatic organisms take oxygen from the water using their gills. Some do. Most only from one or the other. For example a tuna fish gets pretty much all its oxygen from oxygen dissolved in water. Humans get all our oxygen from the air. Mudskippers get oxygen from both. Yes. Land animals take in oxygen that plants release using their noses. On the other hand, aquatic or marine…
Oceans are salt water, so sodium and chlorine are present in pronounced quantities. But oxygen, carbon dioxide (CO2, which is carbon and oxygen) and a number of other important elements are also present. Consider that if there was no oxygen, fish and a number of other organisms would die. That makes the dissolved oxygen pretty darn important.
Dissolved oxygen is the current amount of oxygen in the water. A certain amount of Dissolved Oxygen Is needed to keep the fish alive, if any of the dissolved oxygen decreases by either a little or a lot it can cause changes in the water, normally if the dissolved oxygen decreases so do the fish and aquatics life's life.
Oxygen best dissolves at surfaces. So generally, you would find the largest amount of dissolved water at the surface, which is in contact with the air. As for a region, I would assume a region that has a lot of photosynthetic organisms and not a lot of oxygen consumers. Another factor that should be kept in mind, is that the lower the concentration of solutes (i.e.. salt) in the water, the more oxygen can be…
The connection between plants and oxygen is that after the plant is done making photosynthesis it releases oxygen into the air and takes in carbon dioxide that we release into the air. So we are the ones who take in oxygen from the plant. This is a reason why we should not cut down a handful of trees otherwise there will be less oxygen in the air.
No. All water molecules contain one oxygen atom and two hydrogen atoms. If this does not describe your molecule, then what you have isn't water. Water on Earth usually contains dissolved oxygen, which is just O2 from the air that has found its way in between water molecules. Water can lack dissolved oxygen.
Chemists study oxygen, its chemical properties, and reactions involving oxygen Biologists study oxygen - it's availability and how it is used and produced by organisms Environmental scientists study how oxygen levels affect the environment and how the environment affects oxygen levels - including oxygen levels in both the atmosphere and dissolved in water.
Type of solution Examples Solid dissolved in a liquid Grease dissolved in petrol, sugar dissolved in water Liquid dissolved in another liquid Liquid detergent dissolved in water, oil dissolved in petrol Gas dissolved in a liquid Oxygen gas dissolved in water, oxygen gas dissolved in blood Gas dissolved in another gas Oxygen gas, carbon dioxide gas and water vapour dissolved in the other gases of the air
It would be impossible for oxygen requiring organisms to exist before photosynthetic organisms because there was not oxygen in the atmosphere for these organisms to breathe. Photosynthetic organisms take carbon dioxide and water in and create oxygen as waste. Before these photosynthetic organisms existed there was not enough or any oxygen in the atmosphere for organisms requiring oxygen to survive.