Which of the following best describes continental drift?
O A. It has stopped happening.
O B. It makes plates move about 2 miles per
year.
O C. It has never happened.
D. It happens too slowly to notice.

How many chromosomes does each human cell contain? a. 23 chromosomes b. 26 chromosomes c. 43 chromosomes d. 46 chromosomes

The human body needs energy in order to carry out life processes such as breathing. where does the body get this energy? a. from eating food b. from learning about new things c. from lying in the sun d. from sleeping

Which of the following is not a type of epithelial cell