The narrowly utilitarian arguments for biodiversity conservation include which of the following from the given list?
(i) Industrial products like dyes, lubricants
(ii) Ecosystem services like photosynthesis
(iii) Pollinators layer of bees, birds and bats
(iv) Firewood, fibre and construction material
(v) The aesthetic pleasure of walking through thick woods
(vi) Products of medicinal importance
(vii) Watching spring flowers in full bloom