Developed countries are facing challenges because their populations are

aging due to decreased death rates.
increasing due to higher birth rates.
losing a sense of economic stability.
competing for limited natural resources.

aging due to decreased death rates.

answer; i believe its a

in contrast, the biological controls are self-sustaining, inexpensive and very effective once established. biological control could be used on thousands of golf course acres, improving their biodiversity and quality as wildlife habitat. in the process, the golf industry will be shown to be leaders in an environmental stewardship program of benefit not only to the lands they manage but also to the watersheds in which they exist.