What type of exercise is specifically enhanced when coupled with flexibility training or stretching?

Describe the primary and secondary immune response in terms of speed and number of antibodies produced?

During endocytosis, cells expel what they don't need take in what they need shrink due to loss of water

Most of the fossils found in virginia are in the coastal plain, valley, ridge, and appalachian plateau regions, best suggesting that these geographic provinces a) were once covered by seawater. b) are the oldest parts of virginia. c) have a great deal of karst topography. d) have large amounts of sedimentary rock.