Which of these problems is global rather than local? A. A rise in Earth's average temperature
B. Point-source water pollution
C. A population increase due to immigration
D. Habitat degradation in an ecosystem

D. Habitat degradation in an ecosystem

Explanation:

Global warming stresses ecosystems through temperature rises, water shortages, increased fire threats, drought, weed and pest invasions, intense storm damage and salt invasion, just to name a few. Some of Australia's great natural icons, such as the Great Barrier Reef, are already threatened

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