Exercise 2. Fill in the gaps to complete the passage below.
When the frequency of wildfires in a particular region is too much, it may have a (1) ___________ impact on the ecosystem. (2) ___________ , frequent wildfires will disrupt the (3) ___________ cycles of these forests by eradicating native plant species and (4) ___________ the growth of (5) ___________ plants and other invasive plant species.
Wildfires can exacerbate levels of carbon dioxide in the atmosphere, thereby (6) ___________ the (7) ___________ effect that is already plaguing our earth. Further, wildfires generate ash and forests available plant (8) ___________, thereby greatly effecting the (9) ___________ of forests. With an increase in water runoff, wildfires can engender flash flood conditions and enable soil (10) ___________.
1. A. devastate B. devastating C. devastation
2. A. For example, B. Therefore C. However
3. A. nature B. native C. natural
4. A. encouraging B. encourage C. encourages
5. A. fire-resisting B. fire-resisted C. fire-resistant
6. A. strengthening B. strong C. strength
7. A. green houses B. greenhouse C. green house
8. A. nutrition B. nutrients C. nutritious
9. A. biodiversity B. diverse C. diversity
10. A. erode B. erosive C. erosion
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Sinh Học lớp 12
