Why should we conserve biodiversity? 

a.      Humans derive food, industrial products and medicines from nature.

b.      Biodiversity plays a major role in many ecosystem services that nature provides.

c.      Biological diversity has aesthetic value and gives us pleasure.

d.      We have a moral responsibility for conserving biodiversity.

The narrowly utilitarian arguments for conserving biodiversity explains the direct economic benefits from nature such as food, industrial products and medicines. The broadly utilitarian argument explains the role of biodiversity in ecosystem services and the aesthetic value of biodiversity. The ethical argument relates to our moral responsibility for conserving the biodiversity.