| http://www.w3.org/ns/prov#value | - Black said that among North American conservationists, the prevailing view is that many common butterfly species are in decline ??? but as with bees, lack of data is a problem when it comes to verifying that view. ???These are butterflies that people didn???t really think about because they saw them every day, and there were lots of them,??? he said. ???We don???t have clear data on this, but many
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