The oxygen in the upper atmosphere combine to form ozone layer (o3) that allows to colonize surface water.
Explanation:
The fossil stomatolites are formed at about 3.0 ga laminated bacteria. they form the sediments to fall into a thin film of bacteria, these bacteria binds with the sediment and grows through it.
Cynobacteria uses water, CO2 and sunlight to create their own food and produce oxygen as a by product. The significance of stromatolites is that they are earliest fossil evidence life on earth.
They were first organism to photosynthesis and produce oxygen.
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Deincrustation (desincrustation) treatment can cause sebum to be broken down or blackheads to be liquefied, as in deep-pore cleansing.
Deincrustation, or galvanic face cleansing is a method of deep skin cleansing with the use of weak direct current.
The method allows easy removal of comedones – buildups resulting from pore clogging with a mixture of skin oil, dead cells and microorganisms.
There are open and closed comedones. Open comedones are blackheads, which have contact with the environment, while closed comedones are deep-seated whiteheads without contact with the environment.
Comedones not only look bad but, after a certain period of time, start getting inflamed, since skin oil and dead cells are perfect media for microorganism existence and reproduction. This results in ugly pimples, which, depending on the process intensiveness, can leave scars. Therefore, comedones have to be removed promptly, and deincrustation is a very good method for the purpose.
The treatment is suitable even for sensitive skin. Depending on the skin type the cosmetologist chooses optimal deincrustation schedule for each individual. The result is visible after the first treatment, and regular treatments allow forgetting about problem skin for good.
Learn more about deincrustation here : brainly.com/question/21585858
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