diet – n. the food and drink that a person or animal usually takes

greenhouse gas – n. any of various gaseous compounds (such as carbon dioxide or methane) that absorb infrared radiation, trap heat in the atmosphere, and contribute to the greenhouse effect

journal – n. a periodical dealing especially with matters of current interest

legume – n. any of a large group of plants (as peas, beans, and clover) with fruits that are pods which split into two parts and root nodules containing bacteria that fix nitrogen

cassava – n. a tropical plant with thick roots that are used to make small white grains (called tapioca) that are used in cooking