Introduction. The Securities and Exchange Commission was established in 1934 to regulate the commerce in stocks, bonds, and other securities. After the October 29, 1929, stock market crash, reflections on its cause prompted calls for reform.he Securities Exchange Act of 1934 created the SEC to regulate exchanges, brokers, and over-the-counter markets, as well as to monitor the required financial disclosures.
Human activities that damage the environment: Burning fossil fuel is damaging the environment which producing carbon dioxide that makes global warming. cutting trees is damaging the environment because it absorbs carbon dioxide and give out oxygen.
These are known as disturbances or arresting factors. In each case, human activity has led to a community which is not the climax community expected in such an area. If the human activity continues, the community will be held in a stable position and further succession will not occur until the human activity ceases.