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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.
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Diffusion and osmosis.
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.
What organisms contributed the most to the shift between an oxygen free atmosphere to an oxygenated atmosphere?
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.
When temperature increases, any saturated gas concentration will decrease.
no Answer: There are several factors that could impact the levels of dissolved oxygen in natural water during the evening and night time. None of these are over riding enoug…h to state that the DO levels would go up or down in all situations: * Cooler temperatures would increase the solubility of oxygen in the water. Oxygen already in the water would tend to stay there. * Temperatures in the water would go down decreasing the activity of any decomposition, slowing the reduction of oxygen levels. * Plants (algae etc.) would stop producing oxygen by photosynthesis * Plants would continue their respiration and consume oxygen * Winds are often calmer in the evening reducing aeration of the water through wave action
It all starts out with cells. When there is a lot of cells that preform the same function the cells make tissues. When tissues work together they make organs. And oragans make… organ systems. Last, organ systems make up an organism. To summerize, cells make tissues, tissues make organs, organs make organ systems, and organ systems make organisms. -Glad to help
there is more dissolved oxygen present in a stream because the movement and the bubbling of the air allows more oxygen to be ingested
Cells are the building blocks that make up all living organisms. Tissues are groups of like cells that, together, perform a function for the living organism. Organs are relati…vely independent groups of tissues (tissue or tissues) that work together to perform a function for the living organism
The colder the water, the more DO (dissolved oxygen) it can contain.
The higher the salinity, the lower the dissolved oxygen concentrations.
Would you expect a fast moving mountain stream or the Mississippi River to have more dissolved oxygen?
I personally would expect the mountain stream to have more dissolved oxygen, because I know that oxygen dissolves better in cold water.
There are a great many factors that will affect the level of dissolved oxygen in water. Temperature is one such factor.
It should be zero. We can use as DO standard solution instead of 2.0 M sodium sulphite (because 2.0 M Na2SO3 DO is zero). Refer to the following link below.
Population which is all of the organisms of the same species.