How do you estimate the sum or difference of 1 3/8 - 8/9

Which of the following best describes the purpose of a nation’s boundaries? a. to limit the movement of goods and people b. to make it easier for cartographers to create maps c. to make the movement of goods and people easier d. to prevent other countries from invading territory

Which of the following types of tourist are best to bring money to the local southeast asian communities

Who developed the theory of plate tectonics?