Note: These Challenge Questions coincide with the Spring 2004 Reports Date: Mon Mar 08 2004 - 16:25:02 EST
We think the first robin will arrive on April 29 with the 36th degree isotherm. Ornithologists observe that the robin follows the 36 or 37 degree isotherm during their migration.
Isellin Middle School/grade 7
Javed
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