AP BIOLOGY

Detailed explanation-1: -Tropical rain forests have hot and wet summers. Savannas are characterized by tropical climate but dry winters. Temperate grasslands have hot and dry summers and cold winters; rainfall occurs during early summers or late springs. Temperate deciduous forests have wet summers and cold winters.

Detailed explanation-2: -The climate is usually warm and temperatures range from 68° to 86°F (20 to 30°C). Savannas exist in areas where there is a 6-8 month wet summer season, and a 4-6 month dry winter season. The annual rainfall is from 10-30 inches (25-75 cm) per year.

Detailed explanation-3: -In essence, a tropical savanna climate tends to either see less rainfall in the rainy season than a tropical monsoon climate or have more pronounced dry season(s). The dry season is longer too, often three months or longer. Total annual rainfall is typically 1000-1500 mm (40-60 inches).

Detailed explanation-4: -If it rained all year, the savannas would become tropical forests, filled with trees and tall vegetation. For grasslands to survive, they need the dry periods that prevent trees from taking over.

Detailed explanation-5: -In tropical savanna climates, the dry season can become severe, and often drought conditions prevail during the course of the year. Tropical savanna climates often feature tree-studded grasslands due to its dryness, rather than thick jungle.