Nature Knows Best:The Value Of A Bird

Albert proceeds to work out the value of a bird. How much is it worth to prevent the world from being over-run by pests and insects? If there were no birds, how would we deal with the problem? - pesticide? How much is it worth to spread seed over wide areas? Birds are tree planters; they keep the environment green. Would man be able to fly if hed never seen a bird?
Release
1998  
Minutes
25  
Grade Level
E-J  
Format
DVD and VHS  
Albert proceeds to work out the value of a bird. How much is it worth to prevent the world from being over-run by pests and insects? If there were no birds, how would we deal with the problem? - pesticide? How much is it worth to spread seed over wide areas? Birds are tree planters; they keep the environment green. Would man be able to fly if hed never seen a bird?

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