Which of the following is not characteristic of a behavior? a. It can be observed. b. It can be recorded. c. It can be influenced by the environment. d. It can include a person’s thoughts. Please select the best answer from the choices provided A B C D

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.

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.

The first amino acid of a new polypeptide chain is