By the late 1960s, people were declaring that “Lake Erie is dead.” The lake was heavily polluted with factory pollutants and sewer waste. ... As pollutants increased in the water, so did phosphorus and nitrogen levels, which led to the development of algal blooms.
how would we know if we did not read or hear the story
Answer:
I believe its 2, good luck
Discrimination it's a hard topic because it has been around for many years and even today, taking into account how many things have happened the lately years, there exists discrimination. Though that is because people have a problem judging others before getting to know them and make up their own assumptions about them. People do not ever try to put themselves in their shoes.