The biome that contains one-half of all plants and animals on Earth is the tropical rainforest.

While other biomes are also incredibly diverse, the tropical rainforest's unique conditions, including:

* High rainfall

* Warm temperatures

* Year-round growing season

* Abundant sunlight

have allowed for an incredible amount of biodiversity to flourish. This includes a vast array of plant species, insects, amphibians, reptiles, birds, and mammals, making it one of the most biodiverse ecosystems on the planet.