D. exhausting a natural resource is not sustainable
Hong Kong is of the world's freest market.
Temperate forest is the ecosystem which usually supports thick forests of deciduous trees.
As the crow flys is the straight line distance from point to point. Use a ruler to measure or a piece of string to match the scale under the map.
By road is the distance following the curved road drawn On the map. Lay a string along the path and then match it to the scale under the map.