“The number of species on earth is decreasing drastically and economic development is the main factor for the problem.” Do you agree or disagree? Why?

Disagree. First, it is unclear that the number of species on earth is decreasing drastically: While estimates of the number of species dying off are between a low of one every four years to a higher of 50,000 per year, many new species are discovered every year. Also, economic development itself is not the main factor for the extinction of many species. Instead, the main reason is related to the issue of property rights as most endangered species are common property, or property without property rights.