Environmentalists in Florida are against offshore drilling in the Gulf of Mexico MAINLY because the drilling might polluted beaches.
The Gulf of Mexico has represented a strategic place for the extraction of oil and gas for the United States. There are millions of dollars invested in this region to continue the exploitation of natural resources. The offshore of Louisiana, Florida, Mississipi, and Alabama are important oil and gas extraction areas that represent a profitable business for oil companies. This offshore drilling has consequences for the environment and many environmentalists in these states had organized demonstrations against these companies.
The Marsupials would be extinct as they wont be able to migrate to South America and Australia.
Explanation:
If the plate tectonics would be in a position as they are in today then the marsupials population that is found today in Australia and other countries would not have been possible as the plate tectonics would not allow them to migrate to these places.
Even if they would migrate to another pace they would not survive as these creatures don't know how to travel longer distances and would eventually die of starvation.