Why is sand called sand? give a one-sentence explanation on why sand is called sand.

Where does the availability of water pose the greatest problem

Which of the following best describes brazil's economy from 1650-1880? a. it gradually shifted to manufacturing as the industrial revolution progressed. b. it was based on mining. c. it was based on plantation agriculture, where slaves served as a labor force. d. it was based on small, family-owned farms.

Como se presentan los personajes de cunshi y su pequeño hijo? describe a cada uno de ellos