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作文题目:
Do you agree or disagree with the following statement?
Snap judgments can never be trusted.
Use reasons and examples to support your opinion.
草率的判断不可信。你同意这种说法吗？给出原因和例子。
字数要求:300字以内。
In nature, soluble Mn (III) ions mainly exist in the processes of photosynthesis of phytoplankton , bio-oxidation or inorganic oxidation of Mn (II) to Mn (IV), photochemistry of manganese oxide and chemical oxidation of sulfides , Cr3 or organic matter . Recent studies have found that the concentration of soluble Mn(Ⅲ) ions in the marine environment is about 5 μmol/L, accounting for 100% of the dissolved manganese in the marine environment. It accounts for 90% of the total dissolved manganese content in the pore water of estuarine sediments . This phenomenon shows that Mn (III) ions are the main component of dissolved manganese in an oxygen-deprived environment. At the same time, the study found that, like Fe (III) ions, Mn (III) ions are also present in high concentrations in oxygen-rich environments such as lakes and oceans
