https://www.thebalancemoney.com/black-tuesday-definition-cause-kickoff-to-depression-3305819
Black Tuesday: Definition, Cause, Kickoff to Depression
Black Tuesday (October 29, 1929) is the worst day in NYSE history. It started the Depression. The Dow fell by 11% as 16 million shares were traded.
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https://www.verywellhealth.com/information-about-free-radicals-2249103
Free Radicals: Definition, Cause, and Role in Cancer
Free radicals are unstable molecules that cause damage to DNA in cells and more. How and why do they occur and how can you reduce their effects?
definition causefreeradicals