Future Foods

2. a method of growing plants in a nutrient solution, with or without the support of soil, sand, or gravel
5. a gas found in the Earth's atmosphere, it is made up of two oxygen atoms and is necessary for life—the symbol for oxygen is O
6. a gas found in the Earth's atmosphere, its molecules have one carbon atom and two oxygen atoms—it is a waste product of respiration in living things and also acts as a greenhouse gas, trapping energy from the Sun in the Earth's atmosphere
8. a substance, like starch or sugar, that is rich in energy and made up of carbon, hydrogen, and oxygen
10. the substance everything is made of, something that takes up space and has weight
12. the cultivating of the soil, producing of crops, and raising of livestock
13. one of the small openings on the surface of plant leaves through which gas exchange happens
14. a simple sugar, often in the form of a carbohydrate, produced through photosynthesis

1. a gas, it is very common in the Universe and forms part of water—the symbol for hydrogen is H
3. the process by which plant cells use light to convert carbon dioxide and water into sugar, which is food for the plant
4. chain a way of describing how animals gain energy and matter from other organisms
7. a tiny part in a plant containing chlorophyll—chloroplasts are where photosynthesis occurs
9. a method of growing plants by suspending their roots in the air and spraying them with nutrient solutions
11. a substance needed for healthy growth, development, and functioning