Question
why does the northward migration take two months longer than the southward migration?
Answers
Dr Russ
I guess this refers to grey whales again.
Look at what they are doing during the migration
http://www.learner.org/jnorth/tm/gwhale/MigrationRoute_Map2008.html
Look at what they are doing during the migration
http://www.learner.org/jnorth/tm/gwhale/MigrationRoute_Map2008.html