This worksheet will challenge your child's biology vocabulary. In order to complete the worksheet, your child must first read through the various clues. Then, he will need to study the pictures closely to solve the different rebuses. What's a rebus? It's just a fancy name for a word or phrase made up of pictures and/or letters. For instance, the letter "c" followed by a picture of an ant is a rebus that writes out "can't." This is a fun way for your child to improve his vocabulary while solving word puzzles. So get started!