AP BIOLOGY

Detailed explanation-1: -Desert Biomes Deserts generally occur in a band around the world between 15–30° N and S latitude (Figure 4). They cover between 26–35% of the land surface of the Earth. The climate of deserts is dominated by low precipitation, generally below 250 mm yr-1 (Figure 7).

Detailed explanation-2: -Deserts are dry areas where rainfall is less than 50 centimeters (20 inches) per year.

Detailed explanation-3: -Tropical rainforests have high net primary productivity because the annual temperatures and precipitation values support rapid plant growth. However, the high amounts of rainfall leaches nutrients from the soils of these forests.

Detailed explanation-4: -The tropical rainforest biome has four main characteristics: very high annual rainfall, high average temperatures, nutrient-poor soil, and high levels of biodiversity (species richness). Rainfall: The word “rainforest” implies that these are the some of the world’s wettest ecosystems.