The great lakes have been around since the tail end of the Ice Age. Now 2.6 million years later, the great lakes are facing huge problems. The great lakes have now been suffering through pollution, invasive species, and habitat loss. These are some of the reasons why.
The pollution in the great lakes is not great, but its not horrendous. The text explains that pollution is in the great lakes, but other evidence explains that the great lakes pollution has gotten better since the 60's. In fact, pollution was originally 400% worse in the 60's. Now we have maybe 250 gallons of pollution. That may sound like a lot but its maybe 0.5 percent of the lake.
It's the same thing with invasive species. It was bad in the early 70's, but has been reduced
The pollution in the great lakes is not great, but its not horrendous. The text explains that pollution is in the great lakes, but other evidence explains that the great lakes pollution has gotten better since the 60's. In fact, pollution was originally 400% worse in the 60's. Now we have maybe 250 gallons of pollution. That may sound like a lot but its maybe 0.5 percent of the lake.
It's the same thing with invasive species. It was bad in the early 70's, but has been reduced