1. Pablo Guerrero

2. Quizz: choose the correct answer Nitrogen Oxygen Ozone Carbon dioxide Troposphere Stratosphere Mesosphere Ionosphere The ozone layer is found in this part of the atmosphere

4. The ozone layer is found in the stratosphere

5. Quizz: choose the correct answer Nitrogen Oxygen Ozone Carbon dioxide Troposphere Stratosphere Mesosphere Ionosphere Meteorological phenomena occur in this layer

7. Meteorological phenomena occur in the troposphere

8. Quizz: choose the correct answer Nitrogen Oxygen Ozone Carbon dioxide Troposphere Stratosphere Mesosphere Ionosphere This gas blocks ultraviolet rays which are dangerous for health

10. Ozone blocks ultraviolet rays which are dangerous for health

11. Quizz: choose the correct answer Nitrogen Oxygen Ozone Carbon dioxide Troposphere Stratosphere Mesosphere Ionosphere This gas is used by plants to produce their own organic matter

13. Carbon dioxide is used by plants to produce their own organic matter

14. Quizz: choose the correct answer Nitrogen Oxygen Ozone Carbon dioxide Troposphere Stratosphere Mesosphere Ionosphere This is the most abundant gas in the atmosphere

16. Nitrogen is the most abundant gas in the atmosphere

17. Quizz: choose the correct answer Nitrogen Oxygen Ozone Carbon dioxide Troposphere Stratosphere Mesosphere Ionosphere Polar auroras form in this layer

19. Polar auroras form in the ionosphere

20. Quizz: choose the correct answer Nitrogen Oxygen Ozone Carbon dioxide Troposphere Stratosphere Mesosphere Ionosphere Most living beings need this gas to breathe

22. Most living beings need oxygen to breathe

23. Quizz: choose the correct answer Nitrogen Oxygen Ozone Carbon dioxide Troposphere Stratosphere Mesosphere Ionosphere This layer contains most of the mass of gas in the atmosphere

25. The troposphere contains most of the mass of gas in the atmosphere

26. Quizz: choose the correct answer Nitrogen Oxygen Ozone Carbon dioxide Troposphere Stratosphere Mesosphere Ionosphere Living beings produce this gas when they breathe

28. Living beings produce carbon dioxide when they breathe

29. Quizz: choose the correct answer Nitrogen Oxygen Ozone Carbon dioxide Troposphere Stratosphere Mesosphere Ionosphere This layer absorbs the most dangerous solar radiation (X- rays and gamma rays)

31. The ionosphere absorbs the most dangerous solar radiation (X-rays and gamma rays)

32. Quizz: choose the correct answer Nitrogen Oxygen Ozone Carbon dioxide Troposphere Stratosphere Mesosphere Ionosphere In this layer, most meteorites burn up

34. In the mesosphere, most meteorites burn up

35. Quizz: choose the correct answer Nitrogen Oxygen Ozone Carbon dioxide Troposphere Stratosphere Mesosphere Ionosphere All living beings live in this layer of the atmosphere

37. All living beings live in the troposphere

38. Quizz: choose the correct answer Nitrogen Oxygen Ozone Carbon dioxide Troposphere Stratosphere Mesosphere Ionosphere Plants produce this gas when they perform photosynthesis

40. Plants produce oxygen when they perform photosynthesis