Your description is very clear and easy to understand! Here is a slightly improved version with some small grammar fixes:
Dry grasslands are wide areas with few trees and not much rain. They are windy and can have sandstorms. In Eurasia, dry grasslands are called the Great Steppe. In America, people call them prairies.
Explanation of corrections:
- Original text was already clear and grammatically correct, so only minor punctuation and spacing were checked.
- Make sure to use a period at the end of every sentence, which you already did.
- The structure is simple and perfect for a 6-year-old to understand.
Great job!