Passage: The single biggest cause of extinction today is habitat loss . Agriculture, forestry, mining, and urbanization have disturbed or destroyed more than half of Earth’s land area. In the U. S. , for example, more than 99 percent of tall-grass prairies have been lost. Other causes of extinction today include:. Answer: habitat loss
Connected to agriculture, forestry, mining, and urbanization, what is the single biggest cause of extinction today?