Three reasons why tropics show greatest levels of species diversity:
1. Stable climate: The tropics have a warm, stable climate with little seasonal variation. This consistency allows for the evolution and survival of a wide range of species.
2. High primary productivity: The tropical regions, especially rainforests, have high primary productivity due to abundant sunlight, rainfall, and warm temperatures, supporting a wide range of organisms.
3. Ecological niches: The tropics have a diverse range of habitats, creating multiple ecological niches where different species can evolve and coexist.

Draw a rough sketch for the curve $y = 2 + |x + 1|$. Using integration, find the area of the region bounded by the curve $y = 2 + |x + 1|$, $x = -4$, $x = 3$, and $y = 0$.