Many agricultural practices have been designed to reduce soil erosion. Some, such as grassed waterways, move water into channels and then off the fields. Others, such as contour planting and conservation tillage, are designed to slow runoff, hold the soil in place, and reduce soil erosion. Still others, such as field borders and grassed buffer zones, are designed to trap soil that is moving from agricultural fields. These nutrients are the primary cause of algal blooms.
Algal blooms can kill fish, cause the water to be toxic, and make water taste bad.
Without enough oxygen, the baby may turn blue and die. A recent North Carolina study of 1,719 drinking water wells found that 1.8 percent of the wells had nitrate-nitrogen levels at or above the danger level of 10 parts per million. Approximately 20 percent of the wells sampled contained elevated nitrate-nitrogen levels of between 4 and 9 parts per million, also risky. Circle the statement that best describes your soil conservation practices. I prevent soil erosion by using conservation tillage.