Paragraph 1 is your lead paragraph. It will contain an overview of what you have

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 write about how deforestation disrupts the hydrologic (water) cycle.
In paragraph 4, you’ll explain how deforestation is related to declining species diversity.
Paragraph 5 is your conclusion paragraph. Here, you can describe how you feel about the three effects of deforestation discussed, and what we might do about it.