IMPORTANT PLEASE READ FULL INSTRUCTIONS. NO PLAGIARISM! NO QUOTES, MUST PARAPHRASE. I WILL CHECK FOR RECYCLED WORK AND PLAGIARISM. THIS ASSIGNMENT IS DUE 08/21/22 AT 9PM PST. IF YOU CANT MEET THIS DEADLINE, DONT AGREE TO DO MY ASSIGNMENT. PRICE ISNT NEGOTIABLE.  PLEASE UNDERSTAND BY ACCEPTING TO DO MY WORK, I HAVE STRICT RULES. I DONT LIKE TO DISPUTE, BUT I WILL IF DIRECTIONS ARENT BEING FOLLOWED. IF I SEE SOMETHING WRONG AFTER PURCHASING, I WILL GIVE YOU A CHANCE TO FIX IT IMMEDIATELY. THIS DOESNT MEAN HOURS  LATER. IF YOU TURN SOMETHING INTO ME EARLY, I EXPECT YOU TO FIX MY ASSIGNMENT IMMEDIATELY. DONT LIE TO ME, IF THESE RULES ARENT FOLLOWED, I WILL DISPUTE   
 Toxic Mechanisms of Five Heavy Metals: Mercury, Lead, Chromium, Cadmium, and Arsenic. The industrial activities of the last century have caused massive increases in human exposure to heavy metals. Mercury, lead, chromium, cadmium, and arsenic have been the most common heavy metals that induced human poisonings. 
 
Can you explain the meaning of “safe” and “unsafe” for levels of any five of the toxic metals you studied this week? Explain why some metals, called essential metals with potential for toxicity, can be present and safe in trace amounts while other essential metals with potential for toxicity cannot be safe even at low concentrations. In your journal, also reflect on the following questions:

Are there any metals that would never be safe at any detectable levels?

Why is this the case for these metals?
Give examples of cases in which the federal government has lowered standards for exposure to toxic metals in drinking water as epidemiologic knowledge regarding their adverse has accumulated.

Given the lead poisoning that occurred in Flint, Michigan between 2014 – 2019, elaborate on why lead contamination remains a concern for environmental health experts.
Hypothesize why racial and ethnic minorities continue to be impacted by toxic metal exposures at higher levels than whites.
Close your journal by discussing if you believe “safe” lead levels will always be an oxymoron.

Your journal assignment should be at least 500 words in length.

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