Rephrased sentences for a 6-year-old
On rainy days, sloths look green because algae grow in their fur.
Sloths turn green in the rain since tiny algae live in their fur.
The rain makes sloths look green because algae are growing on their fur.
When it rains, sloths appear green because algae live on their fur.
Algae in a sloth’s fur makes it look green on rainy days.