1. 
								Which of the following is a benefit of using renewable energy sources? 
			
		
	
				 
								 
										
								
										2. 
								Why is biodiversity important for ecosystems? 
			
		
	
				 
								 
										
								
										3. 
								Which gas is most responsible for the greenhouse effect? 
			
		
	
				 
								 
										
								
										4. 
								What is the primary purpose of rainwater harvesting? 
			
		
	
				 
								 
										
								
										5. 
								What is the main threat to biodiversity? 
			
		
	
				 
								 
										
								
										6. 
								What is the main goal of conservation? 
			
		
	
				 
								 
										
								
										7. 
								Which of the following is not a fossil fuel? 
			
		
	
				 
								 
										
								
										8. 
								Why is it important to conserve water? 
			
		
	
				 
								 
										
								
										9. 
								What is meant by biodiversity? 
			
		
	
				 
								 
										
								
										10. 
								Which of the following is a renewable resource? 
			
		
	
				 
								 
										
								
										11. 
								Which of the following is a major air pollutant? 
			
		
	
				 
								 
										
								
										12. 
								Which of the following is an example of an inexhaustible resource? 
			
		
	
				 
								 
										
								
										13. 
								Which of the following is an example of a fossil fuel? 
			
		
	
				 
								 
										
								
										14. 
								Which stage of the water cycle involves water vapor cooling and forming clouds? 
			
		
	
				 
								 
										
								
										15. 
								Which practice can help improve air quality? 
			
		
	
				 
								 
										
								
										16. 
								Which of the following processes is part of the water cycle? 
			
		
	
				 
								 
										
								
										17. 
								Which human activity is a major cause of air pollution? 
			
		
	
				 
								 
										
								
										18. 
								Which of the following is a characteristic of renewable resources? 
			
		
	
				 
								 
										
								
										19. 
								What is the second most abundant gas in the Earth's atmosphere? 
			
		
	
				 
								 
										
								
										20. 
								What is one simple way to conserve water at home? 
			
		
	
				 
								 
										
								
										21. 
								Which of the following activities can help reduce greenhouse gas emissions? 
			
		
	
				 
								 
										
								
										22. 
								Which of the following activities does not contribute to water pollution? 
			
		
	
				 
								 
										
								
										23. 
								What is the approximate percentage of nitrogen in Earth's atmosphere? 
			
		
	
				 
								 
										
								
										24. 
								Which of the following is a consequence of deforestation? 
			
		
	
				 
								 
										
								
										25. 
								Which of the following practices is essential for sustainable development? 
			
		
	
				 
								 
										
								
										26. 
								What is the greenhouse effect? 
			
		
	
				 
								 
										
								
										27. 
								Which of the following is a greenhouse gas? 
			
		
	
				 
								 
										
								
										28. 
								Which method is used to prevent soil erosion by planting rows of trees or shrubs? 
			
		
	
				 
								 
										
								
										29. 
								Which of the following is a non-renewable resource? 
			
		
	
				 
								 
										
								
										30. 
								Which of the following is a byproduct of photosynthesis? 
			
		
	
				 
								 
										
								
										31. 
								Which of the following is a source of renewable energy? 
			
		
	
				 
								 
										
								
										32. 
								What is the purpose of contour ploughing? 
			
		
	
				 
								 
										
								
										34. 
								Which of the following is the largest source of fresh water on Earth? 
			
		
	
				 
								 
										
								
										35. 
								Which of the following is not a form of renewable energy? 
			
		
	
				 
								 
										
								
										36. 
								Which of the following is a fossil fuel? 
			
		
	
				 
								 
										
								
										37. 
								What is one method to conserve water in agriculture? 
			
		
	
				 
								 
										
								
										38. 
								Which of the following can help prevent soil erosion? 
			
		
	
				 
								 
										
								
										39. 
								Which gas is used by plants during photosynthesis? 
			
		
	
				 
								 
										
								
										40. 
								Why is it important to conserve natural resources?