Pineapples, unlike most other fruit, contain an enzyme called bromelain, that breaks up the gelatin into it's amino acid building blocks. [Enzymes are biomolecules that catalyze chemical reactions; most of them are proteins themselves.] Due to the bromelain, your jello doesn't become (or stay) solid.
Down syndrome, turner syndrome, Klinefelter syndrome, and fragile X syndrome.
Their self esteem falls as they are compared to other children at their school. They suffer.
The correct answer to your question is C- Negative Ion.
