I'll say the same idea six different ways in easy words (cells = tiny parts):
- Blood is red because it has lots of little red bits inside.
- Lots of tiny red pieces in blood make it look red.
- Blood looks red since most of the tiny parts in it are red.
- Most of the things in blood are red, so the blood is red.
- The reason blood is red is that many of its parts are red.
- Blood appears red because it’s full of little red cells (tiny parts).
Do you want me to draw a quick picture to show the little red bits?