Temperature+change+and+the+past

Learning objective:


 * Understand the global climate has chnaged
 * Understand the human and physical causes for this change
 * Explaint the effects of climate chnage and how people may respond

=__How has climate chnaged and the causes:__= media type="youtube" key="S9ob9WdbXx0" height="315" width="420"

media type="youtube" key="hhzjxSCDh48" height="315" width="420"

=The impacts of global warming:= media type="youtube" key="xBacp7aaqN4" height="315" width="560"

[|Nat geographic: & billion series. Climate chnage and Bangladesh]