Across
- 2. an ionized gas consisting of positive ions and free electrons in proportions
- 4. samll amounts of food at a time
- 7. nitrogenous organic compounds that consist of large molecules composed of one or more long chains of amino acids
- 8. a soft gray metal
- 10. a natural oily or greasy substance
- 12. a soft silvery-white reactive metal
- 13. a colorless, transparent, odorless, tasteless liquid
- 14. keeps your body healthy
- 17. a chemical element or substance required in trace amounts for the normal growth and development of living organisms.
- 18. flowers grow from this and make food
- 19. of or relating to a bodily organ or organs
Down
- 1. certain types of foods make you this
- 3. used as a sweetener in food and drink.
- 5. typically can be broken down to release energy
- 6. compounds that are essential for normal growth and nutrition
- 8. either of two units of heat energy.
- 9. a red protein responsible for transporting oxygen in the blood of vertebrates
- 11. fabric or clothing
- 15. components in foods that an organism uses to survive and grow
- 16. food that is not spoiled or rotten