Paragraph 1 is your lead paragraph. It will contain an overview of what you have to say about these three topics: disruption of the carbon cycle, disruption of the hydrologic      (water) cycle, and the reduction of species diversity.
Paragraphs 2, 3, and 4, are your body paragraphs. 

  Paragraph 2 should describe how deforestation disrupts the carbon cycle.
  In paragraph 3, you’ll writeabout how deforestation disrupts the hydrologic (water) cycle.
  In paragraph 4, you’ll explain how deforestation is related to declining species diversity.