polysaccharide: starch. Storage form of carbohydrate in plants, plants use for energy Mainly in seeds, roots, and tubers-similar in structure to glycogen but fewer branches-potatoes and grains are major sources of starch.
Wiktionary (0.00 / 0 votes) Rate this definition: dustbowl (Noun) An area which abounds in dust and which is very dry. dustbowl (Noun) The central region of the United States during the 1930s. dustbowl (Noun) The 1930s period.
the dust bowl was caused partially by the great depression, due to the depression, farmers were trying to make maximum profit, so they cut down trees to get more land, planted too much, and let cattle graze too much, and that took out all the roots holding the soil together, causing the soil to loosen into dust and blow everywhere.