NEET BIOLOGY

Detailed explanation-1: -Acid Rain has become a large problem in recent years to the Great Lakes. The most important environmental issue in Canada is deforestation and timbering.

Detailed explanation-2: -Since the 1990s, studies have identified toxic pollutants including PCBs, DDT and chlordane in and around the Great Lakes, as well as lead, copper, arsenic and others. Some of these chemicals continued to show up because they were persistent and took a long time to break down.

Detailed explanation-3: -Threats to the Great Lakes’ ecosystems, include invasive species, climate change, pollution, and habitat destruction. Climate change affects water temperatures, weather patterns, and lake levels. Pollutants from residential, agricultural, and industrial areas reduce water quality.

Detailed explanation-4: -Water pollution affects the health of the waterway, the health of the organisms living in and around the waterway, and, eventually, the health of humans. The effects of water pollution can range from aquatic deformities to contaminated fish to “dead” lakes.

Detailed explanation-5: -Water Withdrawals Threaten the Great Lakes Removing water from the Great Lakes basin can put fish and wildlife at risk by damaging habitat and degrading water quality. Predicted lower Great Lakes water levels due to climate change and increased water use are looming threats to the Great Lakes.