I do not know what this question is about. But a hot tip: Do not rely on your calculator so much. Enjoy the rest of your day
Organic matter and nutrients causes an increase in aerobic algae and depletes oxygen from the water column. This causes the suffocation of fish and other aquatic organisms. Sulfate particles from acid rain can cause harm the health of marine life in the rivers and lakes it contaminates, and can result in mortality.
Renewable Energy: The Energy Of The Future
5+x
x represents the number, and "more than" indicates that it's addition.