The highest diversity of plant and animal life occurs in b) tropical rain forests.
Tropical rain forests are known for their rich biodiversity. They are situated near the equator and they experience warm temperatures and high rainfall throughout the year. This environment creates ideal conditions for a wide variety of plants and animals to thrive. Unlike other ecosystems, tropical rain forests have multiple layers, including the emergent layer, canopy, understory, and forest floor, each hosting unique species adapted to their specific niches.
In contrast, while tropical savannas, temperate deciduous forests, and boreal forests also support diverse ecosystems, they do not reach the same levels of biodiversity as tropical rain forests.