Grammar check for an 8-year-old: The Arctic fox molts — sheds and regrows its fur — so it looks white in winter and brown in summer

Great sentence — it's correct!

Here is a simple explanation:

1. "The Arctic fox" is the subject (who).
2. "molts" is the verb (what it does). "Molts" means it sheds and regrows its fur.
3. The dashes — like these — add the extra information "sheds and regrows its fur." That information explains what "molts" means.
4. "so it looks white in winter and brown in summer" tells us the result of molting: the fox changes color.

If you want a shorter or simpler version, you can use one of these:

• The Arctic fox molts, so it looks white in winter and brown in summer.
• The Arctic fox sheds and regrows its fur. It looks white in winter and brown in summer.

One small note: "molts" is the usual spelling in American English. In British English you might see "moults." Both are correct.