Biomas terrestres: las praderas templadas

Grasslands cover a quarter of the mainland and are found on every continent except Antarctica. They are mainly located in Africa, Asia, and North America, with some in South America and Australia. Tropical savannas have two seasons, while temperate grasslands experience extreme temperatures and less rainfall. North American prairies support herds and have little shelter for predators and prey. Historically, 60 million bison roamed these prairies, but hunting and habitat loss reduced their numbers. Conservation efforts have helped bison populations recover, contributing to the biodiversity of the prairies.

Which continent does not have any grasslands?

• Africa

• Australia

• South America

• Antarctica

In which regions are grasslands predominantly found?

• North America, Europe, and Africa

• Europe, South America, and Antarctica

• Central Africa, Central Asia, and North America

• Australia, Antarctica, and Central Asia

What are the two well-defined seasons in tropical prairies?

• A dry summer and a wet winter

• A harsh drought in winter and a wet summer

• A mild winter and a dry summer

• A wet winter and a dry summer

What is the maximum temperature range in temperate grasslands?

• 25 °C in summer and -10 °C in winter

• 40 °C in summer and -30 °C in winter

• 30 °C in summer and -20 °C in winter

• 38 °C in summer and -40 °C in winter

What was the historical population of bison in the North American prairie?

• 10 million

• 30 million

• 60 million

• 100 million