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Across 2. a new science that studies nature's models and then imitates or takes inspiration from these designs and processes to solve human problems 4. one form of conversion used to convert radiant energy into usable energy 6. an iron-containing protein complex, found principally in the intestinal mucosa, spleen, and liver, that functions as the primary form of iron storage in the body 7. the plant lore and agricultural customs of a people 8. the science of crystal structure and phenomena 11. a modern invention based on the grappling hooks of seeds 12. the shifting of industrial process from open loop systems, in which resource and capital investments move through the system to become waste, to a closed loop system where wastes become inputs for new processes 13. field within the area of machine learning; aims to classify data (patterns) based on either a priori knowledge or on statistical information extracted from the patterns 14. a mass of strong, silky filaments by which certain bivalve mollusks, such as mussels, attach themselves to rocks and other fixed surfaces 15. the process in green plants and certain other organisms by which carbohydrates are synthesized from carbon dioxide and water using light as an energy source 16. a "thread" that is self-assembled within both mussels and spiders 17. conducted the famous bell jar experiment 18. the study of the characteristics and uses of the various materials, such as metals, ceramics, and plastics, that are employed in science and technology 19. the use of drugs by animals; ome species ingest non-foods, such as toxic plants, clay or charcoal, to ward off parasitic infestation or poisoning

Down 1. a class of bacteria discovered in the 1970s that are characterised by being able to orient themselves in response to the Earth's magnetic field (magnetotaxis) 2. capable of being decomposed by biological agents, especially bacteria 3. materials that have one or more properties that can be significantly altered in a controlled fashion by external stimuli, such as stress, temperature, moisture, pH, electric or magnetic fields 5. any of various liquids in which the atoms or molecules are regularly arrayed in either one dimension or two dimensions, the order giving rise to optical properties, such as anisotropic scattering, associated with the crystals 9. a hydrocarbon deposit, such as petroleum, coal, or natural gas, derived from living matter of a previous geologic time and used for fuel 10. an approach to medical care that emphasizes the study of all aspects of a person's health, including physical, psychological, social, economic, and cultural factors