Ucks Unlimited helps sample duck species across the United States. Samples from one particular location for the last two years a
re shown below. Which duck population seemed to hold steady? Duck Pond Samples 2010 2011 Mallard 108 Mallard 152 Wood Duck 11 Wood Duck 12 Green Wing Teal 19 Green Wing Teal 34 American Widgeon 24 American Widgeon 29 American Widgeon Green Wing Teal Mallard Wood Duck
Because the scale of such drawings are often smaller than life-size, an architect's scale features multiple units of length and proportional length increments.
