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.

Where are savannahs primarily located?

• Middle East and India

• Asia and Antarctica

• South America, Central Africa, and northern Australia

• North America and Europe

What is the main characteristic of the savannah's winter season?

• Snowfall

• Mild temperatures

• Extreme drought

• Heavy rainfall

How does fire benefit the savannah ecosystem?

• By destroying all vegetation

• By regulating pasture growth and adding nutrients to the soil

• By increasing rainfall

• By cooling the environment

What adaptation helps savannah plants survive winter drought?

• Short roots

• Bright flowers

• Thin leaves

• Long taproots

Why do Serengeti wildebeests migrate during the winter months?

• To find cooler temperatures

• To escape predators

• To find new mates

• To search for rain and pasture