Consider a piston engine airplane with a parasite drag coefficient of 0.02 when its landing gear is retracted, and 0.025 when it is deployed. assume that the other drag polar parameter k does not change. the airplane is deigned to cruise for minimum power requirement with its landing gear retracted at certain altitude. determine the % increase or decrease in the minimum power required if the airplane executes the same flight with its landing gear deployed (as may happen if its retraction mechanism fails)

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.