The lowlands west of australia's eastern mountain range are drained by the murray-darling river system, with its main headwaters in the great basin.
a. artesian
b. barrier
c. dividing
d. darling

Which ofbthe following is a characteristic shared by both brazil and mexico

17. the soil erosion pictured here is the result of what? a. harvesting renewable resources at a rate greater than the sustainable yield b. a mudslide caused by excessive rains c. harvesting renewable resources at a rate lower than the sustainable yield d. the transition between geologic eras and eons

8. is a technique that uses the images from several telescopes to produce a single image. a. reflection b. interferometry c. radiation d. refraction