The decline in approximately 70% of the world's bird species is particularly alarming to scientists because

Question

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Birds are excellent environmental indicators and their decline can signal larger environmental problems, such as habitat destruction or pollution. This makes the decline of bird species particularly alarming to scientists. Option A is incorrect as there have been previous instances of bird species declining in number. Option B is incorrect as human activities such as habitat destruction, pollution, and climate change are known factors in the decline of bird populations. Option C is incorrect as both land and water bird species are experiencing decline. Option E is also incorrect as while birdwatching may have economic value, it is not the primary concern for scientists studying the decline of bird species.

The Decline in Approximately 70% of the World's Bird Species