Answer:
C. Both (a) and (b)
Explanation:
Hunting, destroying habitats, polluting and introducing non-native species can cause extinction.
The major human causes of extinction today are both hunting and destroying habitats, and polluting and introducing nonnative species (Option c is correct).
Human activities are very harmful to natural ecosystems and they are driving many species to irreversible extinction.
Hunting refers to the human practice of killing wildlife animals. Hunting led to the extinction of many animal species in the past (e.g., the Tasmanian tiger, Dodo Bird, etc).
Habitat destruction as a consequence of human activities (e.g., deforestation) is also one of the main causes of the extinction of plants and animals.
Human pollution refers to the addition by human activities of harmful substances to the environment, which can lead to the death of many natural species. It also leads to health problems in humans.
The types of human pollution include air pollution, water pollution, soil pollution, noise pollution and thermal pollution.
The introduction of non-native species is well known to cause the extinction of natural species which are not adapted to survive together with these invasive species.
In conclusion, the major human causes of extinction today are both hunting and destroying habitats, and polluting and introducing nonnative species (Option c is correct).
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