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n 1960, an invasive species of fish was introduced into the stable ecosystem of a river. Since then, the population of a native fish species has declined. This situation is an example of an
1) Ecosystem that has recovered
2) Ecosystems are altered through the activities of humans.
3) Environmental impact caused by physical factors
4) Ecological niche without competition

Respuesta :

luisvaschetto

This situation is an example of 'ecosystems are ALTERED through the activities of humans' (Option 2).

  • Human activities (i.e., anthropogenic activities) represent the main factor capable of affecting the homeostasis of the ecosystems.

  • Some human activities that negatively alter a natural ecosystem include deforestation for different purposes (e.g., urbanization, agriculture, etc), the introduction of non-native invasive species, pollution, etc.

  • These activities may trigger serious problems to the environment such as soil erosion, climate change, undrinkable water, etc.

In conclusion, this situation is an example of 'ecosystems are ALTERED through the activities of humans'.

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