A child reading a book points to a picture on the page and calls to his mother in another room and says, “Mommy, who’s in this p
icture?” He expects that she will know what he is pointing at, even though she cannot see it. Which of the following concepts is illustrated in this example?
Human activities that contribute to desertification include the expansion and intensive use of agricultural lands, poor irrigation practices, deforestation, and overgrazing.
