With the acquisition of smaller companies by larger ones, the 1960's saw a wave of new conglomerates.

Blue－green algae grow abundantly in salt marshes.

Ella Grasso, elected governor of Connecticut in 1974, supported the enactment (given, granted) of a freedom-of-information law.

The Salk vaccine is a major factor in the fight to eradicate polio.

Alligators still exist in some of the dank 潮湿 swamps and bayous小海湾 of Alabama's coastal regions.