Which of the following interactions is an example of symbiosis? a tropical bird performs a courtship dance for a mate a population of hummingbirds migrates during the summer an insect acts as a pollinator for a plant species a mother bear feeds and protects her cubs

The diagram illustrates the activity of vesicles during a cellular process.

Plants that have reproductive structures called cones are?

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.