Elephants and whales are known to use infrasound to communicate over very large distances. What are the advantages of infrasound for long distance communication?
Week5InClassNotes(9/19 -9/21) Monday,September 19,2016 2:05PM 9/19/16 C. ShareCropping(1865-1940) a. Receiveuseofhouse,tools,farm,animals,andplotoflandinexchangeforportionof cropsproduced.Remaindergoestolandowner."contractlabor" i. Worksimilarandcommitmenttoownerstillsimilar ii. Plantationproductivitywaydown b. Familychanges 1) 1870-80%ofhouseholdsincottonbeltmarriedpartners 2) Shiftfromcollectiveandfictivekin(communityraisingachild)tomoreofa nuclearfamily 3) Wifeandkidsworkedinfieldsunderdirectionofhusband 4) Fatherwasdirectconnectiontoeconomicsystem c. "Eviloffemaleloaferism"(1870)(womenworkedinthehouseinwhitefamilies) i. AfterCivilWar,fearwaswomenwouldnotworkinfieldscausinglowercrop production ii. 1870-Census 1) 40%ofblackwomenlistedasfarmlabor a) Other60%weredoinghouseworkforowners/theirownhouse 2) 98%ofwhitewomen"keepinghouse" 3) Blackwomen'sequalityinfamilystartingtodecrease 2. Industrialization a. Agriculturestillimportantinsouthbutreplacedwithmachines i. Menintomanufacturing,womenintodomesticwork,lesstimewithpeople b. GreatMigration i. 1910-1930,1millionAfric