The document discusses different types and sources of water pollution. It explains that point source pollution comes from specific locations that are easier to control, while nonpoint pollution comes from wide areas like lawns and farms and is harder to control since the source is unknown. Over time, laws like the Clean Water Act have helped regulate pollution and protect water resources, though nonpoint pollution remains a challenge. The document provides tips on how individuals can help reduce water pollution through their daily habits and yard practices.

2. Chapter: Freshwater at Earth’s Surface Table of Contents Section 3: Wetlands Section 1: Streams Section 2: Lakes and Reservoirs Section 4: Pollution of Freshwater

20. Section Check 4 Question 1 List some sources of nonpoint pollution. Nonpoint source pollutants can come from lawns, construction sites, roads, and farms. Answer NC: 3.07

21. Section Check 4 Question 2 Which of the following provides funds to communities and industries to limit their water pollution sources? A. Clean Water Act B. Environmental Protection Agency C. Federal Water Pollution Control Act D. The Rivers and Harbors Act NC: 3.08

22. Section Check 4 Answer The answer is A. The Clean Water Act provides federal funds to keep water sources free of pollution. NC: 3.08

23. Section Check 4 Question 3 Why is point source pollution easier to control than nonpoint source pollution? NC: 3.07

24. Section Check 4 Answer Point source pollution enters water from a specific location; therefore, the location of the pollution source is known. Nonpoint source pollution can come from a wide area and the source can be difficult to track down. NC: 3.07