Final answer:
The main causes of ecosystem harms include overfishing, agriculture, pollution, tourism, industrial chemicals, coastal development, vehicular usage, manufacturing industries, poor fire management, mining, poverty, and the exploitation of natural resources.
Step-by-step explanation:
The main causes of ecosystem harms include overfishing, agriculture, pollution, tourism, industrial chemicals, coastal development, vehicular usage, manufacturing industries, poor fire management, mining, poverty, and the exploitation of natural resources. These activities lead to habitat destruction, degradation, overexploitation, and loss of biodiversity. For example, overfishing can cause fishery collapse, and pollution can destroy habitats and ecosystems.