Which of the following are the erosion map affects of a glacier found in the mountains?
a. pieces of rock are removed through a process called arête.
b. valley glaciers widen u- shaped stream valleys into v-shaped glacial valleys
c. with glaciers on three or more sides of a mountaintop, a steep peak called a horn is formed.
d. all of the above

Which of the following statements best describes what is occurring in the land surrounding the sahara desert? a desertification is increasing, and the desert is expanding. b. fewer people are trying to farm in this semiarid region. c. the desert is shrinking with the increased use of irrigation. d. increased urbanization has resulted in decreased deforestation. select the best answer from the choices provided mark this and return save and exit next submit