Saving the Sand Dunes: preserve, restore, suffered, rainfall, whirled, communicated, dunes, affect, effect, ecosystems, species One Riddle One Answer: wearily, depart, suitable, increase, observed, advised, discouraged, caravan, Persia, sultan The Planets in Our Solar System: solar system, easily, farther, main, dim, temperatures, telescope, probably, meteoroids, asteroids, satellite, comets What's in Store for the Future?: objects, entertainment, predictions, computers, natural resources, pollutes, wastewater Wolf!: passion, admire, concentrate, splendid, bothering, dangerous, ached, reputation, offspring, den, communicate The Strongest One: securing, gnaws, decorated, symbol, darkened, weakest, narrator The Perfect Pet: appetite, scratch, satisfy, challenge, perfect, manage, healthy, protectively, prickly, snuggling Penguin Chick: fierce, whips, echoes, shuffles, huddle, junior, down, webbed, rookery, flippers