What is the main threat to coral reefs in U.S. coastal waters?
                            
            
                        
                    Topic: Forestry and Fisheries of the United States
                                    What is the primary advantage of intercropping?
                            
            
                        
                    
                                    The Ogallala Aquifer supplies water for which agricultural region?
                            
            
                        
                    
                                    What is the main purpose of marine protected areas (MPAs)?
                            
            
                        
                    
                                    Which farming practice helps reduce greenhouse gas emissions?
                            
            
                        
                    
                                    What is the leading cause of soil salinization in U.S. agriculture?
                            
            
                        
                    
                                    Why are sustainable forestry practices important for wildlife?
                            
            
                        
                    
                                    Which U.S. region is famous for lobster fishing?
                            
            
                        
                    
                                    The majority of U.S. freshwater fish production comes from ____
                            
            
                        
                    
                                    Agriculture in the U.S. is primarily focused on farming ____
                            
            
                        
                    
                                    What percentage of U.S. fisheries are classified as sustainable under federal guidelines?
                            
            
                        
                    
                                    Which U.S. region is known for oyster farming?
                            
            
                        
                    
                                    The Gulf of Mexico is a leading producer of:
                            
            
                        
                    
                                    The Pacific Coast is a major producer of which seafood?
                            
            
                        
                    
                                    Which fishing method is most harmful to marine ecosystems?
                            
            
                        
                    