Enumerate the differences between the sial and the sima layers in the crust.​

Where does the availability of water pose the greatest problem

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

Is a state government creates a new tax to fund schools a example of checks and balances