Which region is known for its temperate rain forests?

The region known for its temperate rain forests is North America, particularly along the Pacific Northwest coast. This area experiences a unique climate characterized by mild temperatures and significant rainfall, creating ideal conditions for the growth of lush, dense forests. The temperate rain forests here are home to a diverse range of flora and fauna, including towering coniferous trees such as Douglas fir, Sitka spruce, and Western red cedar.

Temperate rain forests typically flourish in regions where warm ocean currents influence climate patterns, leading to moist conditions that support high levels of biodiversity. The combination of abundant moisture and moderate temperatures allows for a rich understorey of ferns and other plants, creating a vibrant ecosystem.

In contrast, the other regions listed do not exhibit the characteristics necessary to support temperate rain forests. The Sahara is known for its extreme aridity and desert conditions, while the tundra features cold climates and permafrost, leading to a vastly different type of vegetation. Similarly, the savanna is recognized for its grassland ecosystems and seasonal rainfall, lacking the forest structure typical of temperate rain forests. Thus, North America stands out as the correct answer for this characteristic ecosystem.