Biomas terrestres: la sabana

Savannahs, or tropical grasslands, are located near the Equator in South America, Central Africa, and northern Australia, covering 20% of Earth's surface. They experience two main seasons: a dry winter and a humid summer. High temperatures and irregular rainfall limit tree growth but support grasses. Fires, though destructive, are crucial for nutrient cycling. Savannah plants have adapted with deep roots, fire-resistant bark, and thorns. The region hosts large herds, like the Serengeti wildebeest, which migrate for pasture. The balance of destruction and creation makes savannahs fascinating ecosystems.

What percentage of the earth's surface is covered by savannahs?

Describe the migration pattern of the Serengeti wildebeest during winter.