Which is an example of a way in which science has improved a societal problem? contaminated water being purified pathogens becoming resistant to antibiotics bacteria contaminating food unknown diseases appearing in some areas
Answers
Answer:
Water purification for human consumption purposes consists in the removal of different contaminants as chemicals (i.e., pollutants, toxic metals), biological contaminants (algae, bacteria, fungi, parasites, viruses), suspended solids, and gases.
There are several methods used in the water purification process, which include: (1) physical processes, such as filtration, sedimentation, or distillation; (2) biological processes, such as sand filters, active carbon; (3) chemical processes, such as flocculation, chlorination, the use of ultraviolet light.
Compared to the other approaches used in water treatment, membrane water filtration presents some advantages, such as: (1) the continuity of the operation; (2) it does not require the use of any chemicals; (3) it does not imply high energy consumption; (4) the possibility of scaling up, be integrated/integrate other processes and possibility of automation
There are several parameters influencing the properties and efficiency of the membranes used in water filtration: (1) the size of membrane pores/the size of the contaminant molecules/particles; (2) the positive/negative charge of the membrane surface, respectively the polarity of the contaminant molecules; and (3) the adsorbing capacity of the membrane surface .
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Answer:
A cuz ppl drink water and thus making it a societal thing
Explanation: